wlan: add support for vendor specific event

Add support for vendor specific event and use it to provide
interfering frequency information to userspace. Userspace should
stop P2P-GO, in case P2P-GO is operating on interfering frequency
and restart P2P-GO by avoiding interfering frequency range(s). User
space may decide to continue operation on interfering frequency,
but in such case, there might be impact on performance.

CRs-Fixed: 531882
Change-Id: Ife3650d6ccb3c55aea38b5d9ba1e0b8b6c7fbca3
diff --git a/CORE/HDD/inc/wlan_hdd_main.h b/CORE/HDD/inc/wlan_hdd_main.h
index 6371351..9f6905a 100644
--- a/CORE/HDD/inc/wlan_hdd_main.h
+++ b/CORE/HDD/inc/wlan_hdd_main.h
@@ -75,6 +75,8 @@
 #ifdef FEATURE_WLAN_TDLS
 #include "wlan_hdd_tdls.h"
 #endif
+#include "wlan_hdd_cfg80211.h"
+
 /*--------------------------------------------------------------------------- 
   Preprocessor definitions and constants
   -------------------------------------------------------------------------*/