[][MAC80211][core][Fix max_bssid_indicator variable]

[Description]
Fix max_bssid_indicator based on real BSS numbers

[Release-log]
N/A

Change-Id: I2490c68173d5bcf3fe55c5dd5466d852f9c6b56a
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/7370582
2 files changed