P2P: Allow wpa_supplicant to start if social channels are not supported

It was possible for an nl80211-based driver to be determined to support
P2P even when the radio supports only the 5 GHz band. This resulted in
P2P initialization failing due to not being able to pick a social
channel and wpa_supplicant not starting. Fix this by not enabling P2P,
but still allowing wpa_supplicant initialization to complete.

Signed-off-by: Jouni Malinen <j@w1.fi>

wpa_supplicant/p2p_supplicant.c

@@ -3931,9 +3931,9 @@ int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
 		 */
 		if (p2p_config_get_random_social(&p2p, &p2p.reg_class,
 						 &p2p.channel) != 0) {
-			wpa_printf(MSG_ERROR,
-				   "P2P: Failed to select random social channel as listen channel");
-			return -1;
+			wpa_printf(MSG_INFO,
+				   "P2P: No social channels supported by the driver - do not enable P2P");
+			return 0;
 		}
 		p2p.channel_forced = 0;
 	}