qcacld-3.0: Update beacon rpt error code

Currently, There is no check for new report to find if
previous beacon report request is in progress.
So whenever a new beacon report request comes,
it is processed without consideration of any ongoing
beacon request processing.

Fix is to add a check of request in progress and append
err code BCN_RPT_ERR_PREVIOUS_REQUEST_PROGRESS in
measurement report response. To find that curr report
request is in progress, add a check
mac_ctx->rrm.rrmPEContext.pCurrentReq[index]. For valid
mac_ctx->rrm.rrmPEContext.pCurrentReq[index] err vsie
will append.

Change-Id: I91127c5c9ccaa19f20c29c85524b89b873e02e17
CRs-Fixed: 2668127

core/mac/src/pe/rrm/rrm_api.c

@@ -1178,7 +1178,8 @@ QDF_STATUS rrm_process_beacon_req(struct mac_context *mac_ctx, tSirMacAddr peer,
 	tpSirMacRadioMeasureReport report;
 	tpRRMReq curr_req;
 
-	if (index  >= MAX_MEASUREMENT_REQUEST) {
+	if (index  >= MAX_MEASUREMENT_REQUEST ||
+	    mac_ctx->rrm.rrmPEContext.pCurrentReq[index]) {
 		if (!*radiomes_report) {
 			/*
 			 * Allocate memory to send reports for