ath5k: Enable AR2315 chipset recognition

Enable recognition of AR2315 chipsets in ath5k driver.
Reported-by: NSimon Morgenthaler <s.morgenthaler@students.unibe.ch>
Signed-off-by: NWojciech Dubowik <Wojciech.Dubowik@neratec.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ath/ath5k/attach.c

@@ -220,7 +220,8 @@ int ath5k_hw_init(struct ath5k_softc *sc)
 			ah->ah_radio = AR5K_RF5112;
 			ah->ah_single_chip = false;
 			ah->ah_radio_5ghz_revision = AR5K_SREV_RAD_5112B;
-		} else if (ah->ah_mac_version == (AR5K_SREV_AR2415 >> 4)) {
+		} else if (ah->ah_mac_version == (AR5K_SREV_AR2415 >> 4) ||
+			ah->ah_mac_version == (AR5K_SREV_AR2315_R6 >> 4)) {
 			ah->ah_radio = AR5K_RF2316;
 			ah->ah_single_chip = true;
 			ah->ah_radio_5ghz_revision = AR5K_SREV_RAD_2316;