ath9k_hw: skip chip tests for AR9271

The chip test is not required for AR9271 on the host driver
code as the firmware will do the test internally on its own.
Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ath/ath9k/hw.c

@@ -499,8 +499,10 @@ static int ath9k_hw_post_init(struct ath_hw *ah)
 {
 	int ecode;
 
+	if (!AR_SREV_9271(ah)) {
 		if (!ath9k_hw_chip_test(ah))
 			return -ENODEV;
+	}
 
 	ecode = ath9k_hw_rf_claim(ah);
 	if (ecode != 0)