net: Update to use new sequence numbers

Checking for seq == -1 is effectively checking that the device is
activated. The new sequence numbers are never -1 for a bound device, so
update the check.

Also drop the note about valid sequence numbers so it is accurate with the
new approach.

Signed-off-by: Simon Glass <sjg@chromium.org>

drivers/net/dwc_eth_qos.c

@@ -1155,7 +1155,7 @@ static int eqos_read_rom_hwaddr(struct udevice *dev)
 	struct eth_pdata *pdata = dev_get_plat(dev);
 
 #ifdef CONFIG_ARCH_IMX8M
-	imx_get_mac_from_fuse(dev->req_seq, pdata->enetaddr);
+	imx_get_mac_from_fuse(dev_seq(dev), pdata->enetaddr);
 #endif
 	return !is_valid_ethaddr(pdata->enetaddr);
 }

net/eth-uclass.c

@@ -126,9 +126,6 @@ struct udevice *eth_get_dev_by_name(const char *devname)
 
 	uclass_foreach_dev(it, uc) {
 		/*
-		 * We need the seq to be valid, so try to probe it.
-		 * If the probe fails, the seq will not match since it will be
-		 * -1 instead of what we are looking for.
 		 * We don't care about errors from probe here. Either they won't
 		 * match an alias or it will match a literal name and we'll pick
 		 * up the error when we try to probe again in eth_set_dev().
@@ -434,7 +431,7 @@ int eth_initialize(void)
 
 		bootstage_mark(BOOTSTAGE_ID_NET_ETH_INIT);
 		do {
-			if (dev_seq(dev) != -1) {
+			if (device_active(dev)) {
 				if (num_devices)
 					printf(", ");
 
@@ -446,7 +443,7 @@ int eth_initialize(void)
 
 			eth_write_hwaddr(dev);
 
-			if (dev_seq(dev) != -1)
+			if (device_active(dev))
 				num_devices++;
 			uclass_next_device_check(&dev);
 		} while (dev);