configs: Re-sync with cmd/Kconfig

Update the config.h and defconfig files for the commands that 8e3c036
converted over to Kconfig

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/MPC8568MDS_defconfig b/configs/MPC8568MDS_defconfig
index 142d8bf..5ec3712 100644
--- a/configs/MPC8568MDS_defconfig
+++ b/configs/MPC8568MDS_defconfig
@@ -5,6 +5,7 @@
 CONFIG_OF_STDOUT_VIA_ALIAS=y
 CONFIG_HUSH_PARSER=y
 CONFIG_CMD_I2C=y
+CONFIG_CMD_MII=y
 CONFIG_CMD_PING=y
 CONFIG_SYS_NS16550=y
 CONFIG_OF_LIBFDT=y