b43: N-PHY: replace N-specific radio_chanspec with common code

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/b43/phy_common.h b/drivers/net/wireless/b43/phy_common.h
index 6dcd033..0e61942 100644
--- a/drivers/net/wireless/b43/phy_common.h
+++ b/drivers/net/wireless/b43/phy_common.h
@@ -253,6 +253,7 @@
 
 	/* Current channel */
 	unsigned int channel;
+	u16 channel_freq;
 	enum nl80211_channel_type channel_type;
 
 	/* PHY TX errors counter. */