wlan: Update APIs for 3.14 kernel

Some CFG/NL80211 and kernel APIs etc. are changed during kernel update
to 3.14 version. Update the corresponding APIs in host driver to fix
compilation errors.

Change-Id: Idc692e83307ff3f3b881d4e1027ba9d8286e3cbe
CRs-fixed: 882885
diff --git a/CORE/VOSS/inc/vos_event.h b/CORE/VOSS/inc/vos_event.h
index fb9762a..c039464 100644
--- a/CORE/VOSS/inc/vos_event.h
+++ b/CORE/VOSS/inc/vos_event.h
@@ -55,6 +55,10 @@
 extern "C" {
 #endif /* __cplusplus */
 
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0))
+#define INIT_COMPLETION(event) reinit_completion(&event)
+#endif
+
 /*-------------------------------------------------------------------------- 
   Type declarations
   ------------------------------------------------------------------------*/