[][[mt76] Add phy capability vendor command]

[Description]
Add vendor command phy capability ctrl/dump in driver layer

[Release-log]
N/A

Change-Id: I538b011647695e48c4a616f81c57bf9146fbf986
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/6142993
1 file changed