ath9k: Split beacon configuration into mode specific routines

This makes the code easier to understand.

Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath9k/main.c b/drivers/net/wireless/ath9k/main.c
index 94297b6..9e8f954 100644
--- a/drivers/net/wireless/ath9k/main.c
+++ b/drivers/net/wireless/ath9k/main.c
@@ -926,7 +926,6 @@
 
 		/* Configure the beacon */
 		ath_beacon_config(sc, 0);
-		sc->sc_flags |= SC_OP_BEACONS;
 
 		/* Reset rssi stats */
 		sc->nodestats.ns_avgbrssi = ATH_RSSI_DUMMY_MARKER;
@@ -2365,7 +2364,7 @@
 			if (error != 0)
 				return error;
 
-			ath_beacon_sync(sc, 0);
+			ath_beacon_config(sc, 0);
 		}
 	}