Included starter config seed NSS offloading for MX4300. Although it can
be used by any compatible ipq807x NSS setup.
There is also an example 'uci-defaults' script that you can use to build
a single image for multiple nodes.
Although the script includes options to set low/high band for mesh backhaul.
Only the high-band works for offloading.
Signed-off-by: Sean Khan <datapronix@protonmail.com>