rtl8xxxu: Set the right type for ps tdma on 8723bu

Use the correct type when setting PS TDMA for 8723bu. This matches the
vendor driver.
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.c

@@ -5712,7 +5712,7 @@ static void rtl8723bu_init_bt(struct rtl8xxxu_priv *priv)
 	/*
 	 * Software control, antenna at WiFi side
 	 */
-	rtl8723bu_set_ps_tdma(priv, 0x00, 0x00, 0x00, 0x00, 0x00);
+	rtl8723bu_set_ps_tdma(priv, 0x08, 0x00, 0x00, 0x00, 0x00);
 
 	rtl8xxxu_write32(priv, REG_BT_COEX_TABLE1, 0x55555555);
 	rtl8xxxu_write32(priv, REG_BT_COEX_TABLE2, 0x5a5a5a5a);