wlan: Reason code for scan abort.

Add a reason code for scan abort. Currently, this is required to
know if the abort is because of a band change. It can be enhanced
further to cater the requirements.

Change-Id: I641f36245d881b4f2cba70223f0abf90edd55b28
CRs-Fixed: 592516
diff --git a/CORE/HDD/src/wlan_hdd_scan.c b/CORE/HDD/src/wlan_hdd_scan.c
index 190a4f0..549cff9 100644
--- a/CORE/HDD/src/wlan_hdd_scan.c
+++ b/CORE/HDD/src/wlan_hdd_scan.c
@@ -1191,8 +1191,9 @@
 }
 
 /* Abort any MAC scan if in progress */
-void hdd_abort_mac_scan(hdd_context_t* pHddCtx, tANI_U8 sessionId)
+void hdd_abort_mac_scan(hdd_context_t* pHddCtx, tANI_U8 sessionId,
+                        eCsrAbortReason reason)
 {
-    sme_AbortMacScan(pHddCtx->hHal, sessionId);
+    sme_AbortMacScan(pHddCtx->hHal, sessionId, reason);
 }