wifi: rtl8xxxu: Clean up filter configuration

When RCR_CHECK_BSSID_MATCH is set in AP mode, we don't receive any data
frames. Rearrange RCR bits to filter flags to match other realtek drivers
and remove RCR_CHECK_BSSID_MATCH in AP mode.

Signed-off-by: Martin Kaistra <martin.kaistra@linutronix.de>
Reviewed-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230428150833.218605-15-martin.kaistra@linutronix.de