r8152: Set NET_ADDR_STOLEN if using passthru MAC

Some docks support MAC pass-through - MAC address
is taken from another device.

Driver should indicate that with NET_ADDR_STOLEN flag.

This should help to avoid collisions if network interface
names are generated with MAC policy.

Reported and discussed here
systemd/systemd#33104

Signed-off-by: Milan Broz <[email protected]>
Reviewed-by: Andrew Lunn <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

drivers/net/usb/r8152.c

@@ -1774,6 +1774,7 @@ static int vendor_mac_passthru_addr_read(struct r8152 *tp, struct sockaddr *sa)
 		goto amacout;
 	}
 	memcpy(sa->sa_data, buf, 6);
+	tp->netdev->addr_assign_type = NET_ADDR_STOLEN;
 	netif_info(tp, probe, tp->netdev,
 		   "Using pass-thru MAC addr %pM\n", sa->sa_data);