rtlwifi: btcoex: 23b 1ant: Switch antenna to wifi or BT.

Since wifi and BT share the same physical antenna, we should switch antenna
to fit every situation.
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Yan-Hsuan Chuang <yhchuang@realtek.com>
Cc: Birming Chiu <birming@realtek.com>
Cc: Shaofu <shaofu@realtek.com>
Cc: Steven Ting <steventing@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8723b1ant.h

@@ -82,6 +82,9 @@ enum _BT_8723B_1ANT_COEX_ALGO {
 };
 
 struct coex_dm_8723b_1ant {
+	/* hw setting */
+	u8 pre_ant_pos_type;
+	u8 cur_ant_pos_type;
 	/* fw mechanism */
 	bool cur_ignore_wlan_act;
 	bool pre_ignore_wlan_act;