ath9k: Move LNA code to antenna.c

And use a helper function to setup antennae after a reset.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath9k/ath9k.h b/drivers/net/wireless/ath/ath9k/ath9k.h
index 2faa181..4c2ce45 100644
--- a/drivers/net/wireless/ath/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
@@ -528,8 +528,10 @@
 }
 #endif
 
-
+/*******************************/
 /* Antenna diversity/combining */
+/*******************************/
+
 #define ATH_ANT_RX_CURRENT_SHIFT 4
 #define ATH_ANT_RX_MAIN_SHIFT 2
 #define ATH_ANT_RX_MASK 0x3
@@ -582,6 +584,9 @@
 	unsigned long scan_start_time;
 };
 
+void ath_ant_comb_scan(struct ath_softc *sc, struct ath_rx_status *rs);
+void ath_ant_comb_update(struct ath_softc *sc);
+
 /********************/
 /* Main driver core */
 /********************/