mwifiex: implement remain_on_channel and cancel_remain_on_channel

Add a new command to implement remain_on_channel and
cancel_remain_on_channel.

Signed-off-by: Stone Piao <piaoyun@marvell.com>
Signed-off-by: Kiran Divekar <dkiran@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/init.c b/drivers/net/wireless/mwifiex/init.c
index 105a5c5..fa96dc3 100644
--- a/drivers/net/wireless/mwifiex/init.c
+++ b/drivers/net/wireless/mwifiex/init.c
@@ -214,7 +214,7 @@
 	priv->wps_ie = NULL;
 	priv->wps_ie_len = 0;
 	priv->ap_11n_enabled = 0;
-	priv->mgmt_rx_freq = 2437;
+	memset(&priv->roc_cfg, 0, sizeof(priv->roc_cfg));
 
 	priv->scan_block = false;