nss-drv: Add diagnostic gathering utility

This is meant to ease debugging when asking for support. Just run the
command "nss_diag" and include in your issues/forum posts.

Example of output
```
     MODEL: Linksys MX5300
   OPENWRT: r27608+169-3f98f68573
IPQ BRANCH: qualcommax-6.x-nss-mx4300-6.11
IPQ COMMIT: 2153dceb34
  IPQ DATE: 2024-10-03
    NSS FW: NSS.HK.11.4.0.5-6-R
  MAC80211: v6.11-0-g98f7e32f20d2
 ATH11K FW: WLAN.HK.2.12-01368-QCAHKSWPL_SILICONZ-1
       GRO: wan         : on
            br-lan      : on
            lan1        : on
            lan2        : on
            lan3        : on
            lan4        : on
            phy0-mesh0  : on
            phy1-ap0    : on
            phy2-ap0    : on

 NSS PKGS: kmod-qca-nss-cfi-cryptoapi - 6.6.53.12.5.2022.12.15~5cd07ce-r3
           kmod-qca-nss-crypto - 6.6.53.12.5.2022.12.15~3c5a574-r3
           kmod-qca-nss-dp - 6.6.53.2024.04.16~5bf8b91e-r1
           kmod-qca-nss-drv - 6.6.53.11.4.0.5.2021.09.13~53e5863-r13
           kmod-qca-nss-drv-bridge-mgr - 6.6.53.11.4.0.5.2021.08.17~c4049d1-r7
           kmod-qca-nss-drv-igs - 6.6.53.11.4.0.5.2021.08.17~c4049d1-r7
           kmod-qca-nss-drv-qdisc - 6.6.53.11.4.0.5.2021.08.17~c4049d1-r7
           kmod-qca-nss-drv-vlan-mgr - 6.6.53.11.4.0.5.2021.08.17~c4049d1-r7
           kmod-qca-nss-drv-wifi-meshmgr - 6.6.53.11.4.0.5.2021.08.17~c4049d1-r7
           kmod-qca-nss-ecm - 6.6.53.12.5.5.2024.09.02~bd5057b-r1
           nss-eip-firmware - 2.5.7-r3
           nss-firmware-default - 2024.08.04~794fe373-r1
           nss-firmware-ipq8074 - 2024.08.04~794fe373-r1
```

Signed-off-by: Sean Khan <datapronix@protonmail.com>

qca-nss-drv/Makefile

@@ -1,7 +1,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=qca-nss-drv
-PKG_RELEASE:=12
+PKG_RELEASE:=13
 
 PKG_SOURCE_URL:=https://git.codelinaro.org/clo/qsdk/oss/lklm/nss-drv.git
 PKG_SOURCE_PROTO:=git
@@ -74,6 +74,9 @@ include $(INCLUDE_DIR)/kernel.mk
 include $(INCLUDE_DIR)/package.mk
 
 NSS_CLIENTS_DIR:=$(TOPDIR)/qca/src/qca-nss-clients
+IPQ_BRANCH:=$(shell git -C $(TOPDIR) rev-parse --abbrev-ref HEAD)
+IPQ_DATE:=$(shell git -C $(TOPDIR) log -1 --format=%cd --date=format:%Y-%m-%d)
+IPQ_COMMIT:=$(shell git -C $(TOPDIR) log -1 --format=%h)
 
 define KernelPackage/qca-nss-drv
   SECTION:=kernel
@@ -102,7 +105,10 @@ define KernelPackage/qca-nss-drv/install
 	$(INSTALL_DATA) ./files/qca-nss-drv.uci $(1)/etc/config/nss
 	$(INSTALL_DATA) ./files/qca-nss-drv.hotplug $(1)/etc/hotplug.d/firmware/10-qca-nss-fw
 	$(INSTALL_BIN) ./files/qca-nss-drv.debug $(1)/usr/bin/nss_stats
-
+	$(INSTALL_BIN) ./files/qca-nss-drv.diag $(1)/usr/bin/nss_diag
+	echo "IPQ_BRANCH=$(IPQ_BRANCH)" > $(1)/etc/ipq_release
+	echo "IPQ_DATE=$(IPQ_DATE)" >> $(1)/etc/ipq_release
+	echo "IPQ_COMMIT=$(IPQ_COMMIT)" >> $(1)/etc/ipq_release
 endef
 
 define KernelPackage/qca-nss-drv/conffiles

qca-nss-drv/files/qca-nss-drv.diag

@@ -0,0 +1,99 @@
+#!/bin/sh
+# shellcheck disable=3037,3060,2034,1091
+
+# check if stdout is a terminal, then set colors.
+if test -t 1; then
+  fg=$(printf '\033[38;5;')
+  bg=$(printf '\033[48;5;')
+  red=$(printf '\033[31m')
+  green=$(printf '\033[32m')
+  yellow=$(printf '\033[33m')
+  blue=$(printf '\033[34m')
+  magenta=$(printf '\033[35m')
+  cyan=$(printf '\033[36m')
+  white=$(printf '\033[37m')
+  reset=$(printf '\033[m')
+  bold=$(printf '\033[1m')
+  underline=$(printf '\033[4m')
+  blink=$(printf '\033[5m')
+  invert=$(printf '\033[7m')
+  resetbold=$(printf '\033[21m')
+  resetunderline=$(printf '\033[24m')
+else
+  fg=""
+  bg=""
+  red=""
+  green=""
+  yellow=""
+  blue=""
+  magenta=""
+  cyan=""
+  white=""
+  reset=""
+  bold=""
+  underline=""
+  blink=""
+  invert=""
+  resetbold=""
+  resetunderline=""
+fi
+
+[ -r /etc/openwrt_version ] && openwrt_rev=$(cat /etc/openwrt_version)
+model=$(jsonfilter -e ''@.model.name'' < /etc/board.json | sed -e "s/,/_/g")
+
+# NSS firmware version
+nss_fw="/lib/firmware/qca*.bin"
+[ "$(ls $nss_fw 2> /dev/null)" ] && nss_version=$(grep -h -m 1 -a -o 'Version:.[^[:cntrl:]]*' $nss_fw | head -1 | cut -d ' ' -f 2)
+
+# ATH11K firmware version
+ath11k_fw=$(grep -h -m 1 -a -o 'WLAN.[^[:cntrl:]]*SILICONZ-1' /lib/firmware/*/q6* | head -1)
+
+# MAC80211 (backports) version
+mac80211_version=$(awk '/version/{print $NF;exit}' /lib/modules/*/compat.ko)
+
+# OpenWRT IPQ
+[ -r /etc/ipq_release ] && . /etc/ipq_release
+ipq_branch=${IPQ_BRANCH:-"N/A"}
+ipq_commit=${IPQ_COMMIT:-"N/A"}
+ipq_date=${IPQ_DATE:-"N/A"}
+
+[ -z "$openwrt_rev" ] && openwrt_rev="N/A"
+[ -z "$model" ] && model="N/A"
+
+
+[ -z "$nss_version" ] && nss_version="N/A"
+[ -z "$ath11k_fw" ] && ath11k_fw="N/A"
+[ -z "$mac80211_version" ] && mac80211_version="N/A"
+
+echo -e "${bold}${red}     MODEL${reset}: ${white}${model}${reset}"
+echo -e "${bold}${red}   OPENWRT${reset}: ${yellow}${openwrt_rev}${reset}"
+echo -e "${bold}${red}IPQ BRANCH${reset}: ${green}${ipq_branch}${reset}"
+echo -e "${bold}${red}IPQ COMMIT${reset}: ${green}${ipq_commit}${reset}"
+echo -e "${bold}${red}  IPQ DATE${reset}: ${green}${ipq_date}${reset}"
+echo -e "${bold}${red}    NSS FW${reset}: ${cyan}${nss_version}${reset}"
+echo -e "${bold}${red}  MAC80211${reset}: ${white}${mac80211_version}${reset}${reset}"
+echo -e "${bold}${red} ATH11K FW${reset}: ${cyan}${ath11k_fw}${reset}"
+echo -ne "${bold}${red}       GRO${reset}${white}: "
+
+count=0
+
+for i in wan br-lan /sys/class/net/br-lan/brif/*; do
+  i=${i##*\/}
+  ethtool -k ${i} | awk -v count=$count -v i=$i -v white=$white -v green=$green -v r=$reset '
+  /generic-receive-offload/ {
+  if(count>0) tab="            "
+  if($2=="on") color=green
+  printf "%s%-11s : %s%s%s\n",tab,i,color,$2,r
+  }'
+  count=$((count + 1))
+done
+
+echo -e "${reset}"
+echo -ne "${bold}${red} NSS PKGS${reset}: ${white}"
+opkg list-installed | awk -v count=0 '
+  /kmod-qca-nss|^nss/ {
+  if(count>0) tab="           "
+  print tab $0
+  count++
+}'
+echo -ne "${reset}"