rtlwifi: Add QoS-NULL and BT-QoS-NULL to reserved page.

Two additional preset responses are added to the reserved page on the
wifi device.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>