qcacld-3.0: Flush Scan results in DRIVER command SET_FCC_CHANNEL

qcacld-2.0 to qcacld-3.0 propagation

When framework sends SET_FCC_CHANNEL command to driver,
driver removes channel 12 and 13 from valid channel list.
Even after removing channels from valid channel list,
BSS entries are not flushed from scan cache table.
BSS entries get removed when age out timer expires.
Scan results shows stale entries before age out timer expires.
As 12 and 13 are not in valid channel list, driver should
remove BSS scanned on channel 12 and 13.

Change-Id: I63ca0bea23da1430ca0e6f323555c3ac6b2d07cd
CRs-Fixed: 949293

core/sme/src/csr/csr_api_scan.c

@@ -4176,6 +4176,11 @@ bool csr_scan_complete(tpAniSirGlobal pMac, tSirSmeScanRsp *pScanRsp)
 		pCommand->u.scanCmd.abortScanDueToBandChange = false;
 	}
 	csr_save_scan_results(pMac, pCommand->u.scanCmd.reason, sessionId);
+	/* filter scan result based on valid channel list number */
+	if (pMac->scan.fcc_constraint) {
+		sms_log(pMac, LOG1, FL("Clear BSS from invalid channels"));
+		csr_scan_filter_results(pMac);
+	}
 #ifdef FEATURE_WLAN_DIAG_SUPPORT_CSR
 	csr_diag_scan_complete(pMac, pCommand, pScanRsp);
 #endif /* #ifdef FEATURE_WLAN_DIAG_SUPPORT_CSR */