ath: Make ath_opmode_to_string understand OCB mode

Make ath_opmode_to_string return "OCB" for NL80211_IFTYPE_OCB. Currently
it will return "UNKNOWN".

Signed-off-by: Bertold Van den Bergh <bertold.vandenbergh@esat.kuleuven.be>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/ath/debug.c

@@ -40,6 +40,8 @@ const char *ath_opmode_to_string(enum nl80211_iftype opmode)
 		return "P2P-CLIENT";
 	case NL80211_IFTYPE_P2P_GO:
 		return "P2P-GO";
+	case NL80211_IFTYPE_OCB:
+		return "OCB";
 	default:
 		return "UNKNOWN";
 	}