[][Add support for ampdu/amsdu switch to mt76-vendor]

[Description]
Add support for ampdu/amsdu switch to mt76-vendor

[Release-log]
N/A

Change-Id: I8dd665df4462da4baa2f0993f15b7aba2d6f56fb
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/5031052
3 files changed