ath9k: Configure btcoex register during every reset

Make sure btcoex register configured with appropriate values
after it is initialized with the default values from initvals.h
during reset.
Signed-off-by: NVasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

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

@@ -2555,6 +2555,9 @@ int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan,
 #endif
 	}
 
+	if (ah->ah_sc->sc_flags & SC_OP_BTCOEX_ENABLED)
+		ath9k_hw_btcoex_enable(ah);
+
 	return 0;
 }