wlan: Abort on-going scan upon receiving PNO enable command

Abort on-going scan upon receiving PNO enable command as the
current firmware design for PNO doesnot consider PNO enable
while on-going host scan.

Change-Id: I92ee90d256f6a8a7e1990a43bdb06a095a413028
CRs-Fixed: 669478
diff --git a/CORE/HDD/inc/wlan_hdd_main.h b/CORE/HDD/inc/wlan_hdd_main.h
index 5ad437e..de5644c 100644
--- a/CORE/HDD/inc/wlan_hdd_main.h
+++ b/CORE/HDD/inc/wlan_hdd_main.h
@@ -1446,4 +1446,6 @@
 
 boolean hdd_is_5g_supported(hdd_context_t * pHddCtx);
 
+int wlan_hdd_scan_abort(hdd_adapter_t *pAdapter);
+
 #endif    // end #if !defined( WLAN_HDD_MAIN_H )