efi: Enable DM_ETH for the app

There is no need to avoid driver model for networking. Drop this.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/configs/efi-x86_app_defconfig b/configs/efi-x86_app_defconfig
index b1efafe..f0bc877 100644
--- a/configs/efi-x86_app_defconfig
+++ b/configs/efi-x86_app_defconfig
@@ -32,7 +32,6 @@
 CONFIG_SYS_RELOC_GD_ENV_ADDR=y
 CONFIG_REGMAP=y
 CONFIG_SYSCON=y
-# CONFIG_DM_ETH is not set
 # CONFIG_REGEX is not set
 # CONFIG_GZIP is not set
 CONFIG_EFI=y