ath5k: disable tx power gain correction probing for hardware that does not need or support it

SVN-Revision: 27324

package/mac80211/patches/440-ath5k_calibrate_srev_checks.patch

+--- a/drivers/net/wireless/ath/ath5k/phy.c
++++ b/drivers/net/wireless/ath/ath5k/phy.c
+@@ -1604,11 +1604,13 @@ int ath5k_hw_phy_calibrate(struct ath5k_
+ 	int ret;
+ 
+ 	if (ah->ah_radio == AR5K_RF5110)
+-		ret = ath5k_hw_rf5110_calibrate(ah, channel);
+-	else {
+-		ret = ath5k_hw_rf511x_iq_calibrate(ah);
++		return ath5k_hw_rf5110_calibrate(ah, channel);
++
++	ret = ath5k_hw_rf511x_iq_calibrate(ah);
++
++	if (ah->ah_radio == AR5K_RF5112 &&
++	    (channel->hw_value & (CHANNEL_5GHZ | CHANNEL_OFDM)))
+ 		ath5k_hw_request_rfgain_probe(ah);
+-	}
+ 
+ 	return ret;
+ }