ath9k: INI update for AR9285 and periodic PA offset caliberation

This patch updates the initvalues for AR9285 chipset and also adds
periodic PA offset caliberation.

Signed-off-by: Senthil Balasubramanian <senthilkumar@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath9k/eeprom.h b/drivers/net/wireless/ath9k/eeprom.h
index 6296e3e..d6f6108 100644
--- a/drivers/net/wireless/ath9k/eeprom.h
+++ b/drivers/net/wireless/ath9k/eeprom.h
@@ -261,7 +261,7 @@
 	u16 deviceCap;
 	u32 binBuildNumber;
 	u8 deviceType;
-	u8 futureBase[1];
+	u8 txGainType;
 } __packed;