ath9k: Refactor hw.c

Split hw.c into more manageable files:
   ani.c
   calib.c
   eeprom.c
   mac.c

Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath9k/Makefile b/drivers/net/wireless/ath9k/Makefile
index a641151..c58cfde 100644
--- a/drivers/net/wireless/ath9k/Makefile
+++ b/drivers/net/wireless/ath9k/Makefile
@@ -1,4 +1,8 @@
 ath9k-y +=	hw.o \
+		eeprom.o \
+		mac.o \
+		calib.o \
+		ani.o \
 		phy.o \
 		regd.o \
 		beacon.o \