wifi: rtw89: declare to support beamformee above bandwidth 80MHz

Declare this to tell AP we can support beamformee over bandwidth 160M,
and then yield better performance in field.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220826061011.9037-3-pkshih@realtek.com