qcacld-3.0: Change random scan mac attributes to be optional

Change random scan mac_addr and mac_addr_mask attributes
to be optional similar to the standard NL80211 scan trigger interface.
When these attributes are not present, configure default values in
such a way that the random addresses generated are not multicast
but locally administered.

Change-Id: I81acfe05d7f08d1b8f77179816da9df05f2eb233
CRs-Fixed: 2280250

core/hdd/src/wlan_hdd_scan.c

@@ -865,6 +865,16 @@ static int wlan_hdd_vendor_scan_random_attr(struct wiphy *wiphy,
 		return -EOPNOTSUPP;
 	}
 
+	if (!tb[QCA_WLAN_VENDOR_ATTR_SCAN_MAC] &&
+	    !tb[QCA_WLAN_VENDOR_ATTR_SCAN_MAC_MASK]) {
+		qdf_mem_zero(request->mac_addr, len);
+		qdf_mem_zero(request->mac_addr_mask, len);
+		request->mac_addr[0] = 0x2;
+		request->mac_addr_mask[0] = 0x3;
+
+		return 0;
+	}
+
 	if (!tb[QCA_WLAN_VENDOR_ATTR_SCAN_MAC] ||
 	    !tb[QCA_WLAN_VENDOR_ATTR_SCAN_MAC_MASK])
 		return -EINVAL;