[][mt76][Add vendor cmd to get available color bitmap]

[Description]
Add vendor cmd to get available color bitmap

[Release-log]
N/A

Change-Id: Ic2ca623b077f5bddf358d098629fc21b5867a0b3
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/6447183
1 file changed