staging: rtl8723au: hal: Removed a space before semicolon

This patch fix the checkpatch.pl warning:

WARNING: space before semicolon prohibited
Signed-off-by: Anjana Sasindran <anjanasasindran123@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8723au/hal/rtl8723a_bt-coexist.c

@@ -9145,7 +9145,7 @@ u32 BTDM_BtTxRxCounterL(struct rtw_adapter *padapter)
 	u32	counters = 0;
 
 	counters = pHalData->bt_coexist.halCoex8723.lowPriorityTx+
-		pHalData->bt_coexist.halCoex8723.lowPriorityRx ;
+		pHalData->bt_coexist.halCoex8723.lowPriorityRx;
 	return counters;
 }