net: fec_mxc: avoid transfer dev_id -1 to get mac address from fuse

Avoid transfer parameter dev_id value with "-1" to .fec_get_hwaddr(),
it should transfer fec->dev_id to get mac address from fuse.

Signed-off-by: Fugang Duan <fugang.duan@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Cc: Joe Hershberger <joe.hershberger@ni.com>
Acked-by: Stefano Babic <sbabic@denx.de>

drivers/net/fec_mxc.c

@@ -1086,8 +1086,8 @@ static int fec_probe(bd_t *bd, int dev_id, uint32_t base_addr,
 #endif
 	eth_register(edev);
 
-	if (fec_get_hwaddr(dev_id, ethaddr) == 0) {
-		debug("got MAC%d address from fuse: %pM\n", dev_id, ethaddr);
+	if (fec_get_hwaddr(fec->dev_id, ethaddr) == 0) {
+		debug("got MAC%d address from fuse: %pM\n", fec->dev_id, ethaddr);
 		memcpy(edev->enetaddr, ethaddr, 6);
 		if (!getenv("ethaddr"))
 			eth_setenv_enetaddr("ethaddr", ethaddr);