mwifiex: add P2P interface

Due to firmware design, driver needs to add a default P2P interface
to implement find phase and action frame handshake.

Signed-off-by: Stone Piao <piaoyun@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/mwifiex/main.c b/drivers/net/wireless/mwifiex/main.c
index 3bb3417..eb22dd2 100644
--- a/drivers/net/wireless/mwifiex/main.c
+++ b/drivers/net/wireless/mwifiex/main.c
@@ -369,6 +369,13 @@
 		dev_err(adapter->dev, "cannot create default AP interface\n");
 		goto err_add_intf;
 	}
+
+	/* Create P2P interface by default */
+	if (!mwifiex_add_virtual_intf(adapter->wiphy, "p2p%d",
+				      NL80211_IFTYPE_P2P_CLIENT, NULL, NULL)) {
+		dev_err(adapter->dev, "cannot create default P2P interface\n");
+		goto err_add_intf;
+	}
 	rtnl_unlock();
 
 	mwifiex_drv_get_driver_version(adapter, fmt, sizeof(fmt) - 1);