mwifiex: add custom IE framework

1. support for setting custom IE from application hostapd etc.
Custom IE addition using auto-indexing and Custom IE deletion using
static indices (which are allocated during IE addition and stored in
driver) are supported.
2. Separate file for handling IE related execution.

Signed-off-by: Avinash Patil <patila@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 d440c3e..c1cb004 100644
--- a/drivers/net/wireless/mwifiex/init.c
+++ b/drivers/net/wireless/mwifiex/init.c
@@ -279,6 +279,7 @@
 	memset(&adapter->arp_filter, 0, sizeof(adapter->arp_filter));
 	adapter->arp_filter_size = 0;
 	adapter->channel_type = NL80211_CHAN_HT20;
+	adapter->max_mgmt_ie_index = MAX_MGMT_IE_INDEX;
 }
 
 /*