qcacld-3.0: Validate vendor abort scan command

In __wlan_hdd_vendor_abort_scan(), nla_parse() is invoked without
specifying a policy. This can result in a buffer overread when
processing the QCA_WLAN_VENDOR_ATTR_SCAN_COOKIE attribute. To avoid
this issue use the existing "scan_policy" when invoking nla_parse().

Change-Id: Ia3e5cb7535bf0f700399e4a49c9c5da362a3ccf6
CRs-Fixed: 2054775

core/hdd/src/wlan_hdd_scan.c

@@ -2442,7 +2442,7 @@ static int __wlan_hdd_vendor_abort_scan(
 #ifndef NAPIER_SCAN
 	ret = -EINVAL;
 	if (nla_parse(tb, QCA_WLAN_VENDOR_ATTR_SCAN_MAX, data,
-	    data_len, NULL)) {
+		      data_len, scan_policy)) {
 		hdd_err("Invalid ATTR");
 		return ret;
 	}