realtek: cleanup documentation

We are using upstream otto timer. Delete some downstream leftovers.

Signed-off-by: Markus Stockhausen <markus.stockhausen@gmx.de>
Link: https://github.com/openwrt/openwrt/pull/19769
Signed-off-by: Robert Marko <robimarko@gmail.com>

target/linux/realtek/files-6.12/Documentation/devicetree/bindings/realtek,otto-timer.yaml

@@ -1,85 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-%YAML 1.2
----
-$id: http://devicetree.org/schemas/timer/realtek,rtl8300-timer.yaml#
-$schema: http://devicetree.org/meta-schemas/core.yaml#
-
-title: Realtek Timer Device Tree Bindings
-
-maintainers:
-  - Markus Stockhausen <markus.stockhausen@gmx.de>
-
-description: |
-  The Realtek SOCs of the RTL83XX and RTL93XX series have at least 5 known
-  timers with corresponding interrupt lines . Their speed is derived from the
-  Lexra Bus (LXB) by dividers. Each timer has a block of 4 control registers in
-  the address range 0xb800xxxx with following start offsets.
-
-  RTL83XX: 0x3100, 0x3110, 0x3120, 0x3130, 0x3140
-  RTL93XX: 0x3200, 0x3210, 0x3220, 0x3230, 0x3240
-
-properties:
-  compatible:
-    items:
-      - enum:
-        - realtek,rtl8380-timer
-        - realtek,rtl8390-timer
-        - realtek,rtl9300-timer
-      - const: realtek,otto-timer
-
-  reg:
-    minItems: 5
-    maxItems: 5
-    description:
-      List of timer register addresses.
-
-  interrupts:
-    minItems: 5
-    maxItems: 5
-    description:
-      List of timer interrupts.
-
-  clocks:
-    maxItems: 1
-
-required:
-  - compatible
-  - reg
-  - interrupts
-  - clocks
-
-additionalProperties: false
-
-examples:
-  - |
-    timer0: timer@3100 {
-      compatible = "realtek,rtl8380-timer", "realtek,otto-timer";
-      reg = <0x3100 0x10>, <0x3110 0x10>, <0x3120 0x10>,
-            <0x3130 0x10>, <0x3140 0x10>;
-
-      interrupt-parent = <&intc>;
-      interrupts = <29 4>, <28 4>, <17 4>, <16 4>, <15 4>;
-      clocks = <&ccu CLK_LXB>;
-    };
-  - |
-    timer0: timer@3100 {
-      compatible = "realtek,rtl8390-timer", "realtek,otto-timer";
-      reg = <0x3100 0x10>, <0x3110 0x10>, <0x3120 0x10>,
-            <0x3130 0x10>, <0x3140 0x10>;
-
-      interrupt-parent = <&intc>;
-      interrupts = <29 4>, <28 4>, <17 4>, <16 4>, <15 4>;
-      clocks = <&ccu CLK_LXB>;
-    };
-  - |
-    timer0: timer@3200 {
-      compatible = "realtek,rtl9300-timer", "realtek,otto-timer";
-      reg = <0x3200 0x10>, <0x3210 0x10>, <0x3220 0x10>,
-            <0x3230 0x10>, <0x3240 0x10>;
-
-      interrupt-parent = <&intc>;
-      interrupts = <7 4>, <8 4>, <9 4>, <10 4>, <11 4>;
-      clocks = <&ccu CLK_LXB>;
-    };
-
-...