[][MAC80211][WiFi6][mt76][Add no_beacon vendor command for cert]

[Description]
Add the vendor command to disable/enable beacon

Usage:
hostapd_cli -i <interface> no_beacon <value>
<value>
0: enable beacon
1: disable beacon

[Release-log]
N/A

Change-Id: I9feea8a1063eb7c244a8f773e3f0857872c1f3ca
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/8591653
2 files changed