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/socrates_defconfig b/configs/socrates_defconfig
index fe491b5..aa4bbb6 100644
--- a/configs/socrates_defconfig
+++ b/configs/socrates_defconfig
@@ -10,7 +10,9 @@
 # CONFIG_CMD_SETEXPR is not set
 CONFIG_CMD_DHCP=y
 # CONFIG_CMD_NFS is not set
+CONFIG_CMD_MII=y
 CONFIG_CMD_PING=y
 CONFIG_CMD_SNTP=y
+CONFIG_CMD_EXT2=y
 CONFIG_SYS_NS16550=y
 CONFIG_OF_LIBFDT=y