efi_loader: Let networking support depend on NETDEVICES

CONFIG_NET does not imply that there are actually network devices
available, only CONFIG_NETDEVICES does. Changing to this dependency
obsoletes the check in Kconfig because NETDEVICES means DM_ETH.

Fixes: 0efe1bcf5c2c ("efi_loader: Add network access support")
Suggested-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/lib/efi_loader/efi_device_path.c b/lib/efi_loader/efi_device_path.c
index acae007..d45985a 100644
--- a/lib/efi_loader/efi_device_path.c
+++ b/lib/efi_loader/efi_device_path.c
@@ -613,7 +613,7 @@
 		*vdp = ROOT;
 		return &vdp[1];
 	}
-#ifdef CONFIG_NET
+#ifdef CONFIG_NETDEVICES
 	case UCLASS_ETH: {
 		struct efi_device_path_mac_addr *dp =
 			dp_fill(buf, dev->parent);
@@ -1052,7 +1052,7 @@
 	return buf;
 }
 
-#ifdef CONFIG_NET
+#ifdef CONFIG_NETDEVICES
 struct efi_device_path *efi_dp_from_eth(void)
 {
 	void *buf, *start;
@@ -1169,7 +1169,7 @@
 		return EFI_INVALID_PARAMETER;
 
 	if (!strcmp(dev, "Net")) {
-#ifdef CONFIG_NET
+#ifdef CONFIG_NETDEVICES
 		if (device)
 			*device = efi_dp_from_eth();
 #endif