ath9k: Split eeprom.c into manageable pieces

Add eeprom_def.c, eeprom_4k.c and eeprom_9287.c
This improves maintainability.

Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath9k/Makefile b/drivers/net/wireless/ath/ath9k/Makefile
index 783bc39..28443e0 100644
--- a/drivers/net/wireless/ath/ath9k/Makefile
+++ b/drivers/net/wireless/ath/ath9k/Makefile
@@ -1,5 +1,8 @@
 ath9k-y +=	hw.o \
 		eeprom.o \
+		eeprom_def.o \
+		eeprom_4k.o \
+		eeprom_9287.o \
 		mac.o \
 		calib.o \
 		ani.o \