[][OpenWrt Dev][Add kernel cmdline boot parameter support]

[Description]
Add support for kernel to accept boot parameters from cmdline.

[Release-log]
N/A

Change-Id: I86a56ef286033d490fcb7985a9768427dfe24a7b
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/5597601
1 file changed