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/qemu_mips_defconfig b/configs/qemu_mips_defconfig
index cc440f8..bb09796 100644
--- a/configs/qemu_mips_defconfig
+++ b/configs/qemu_mips_defconfig
@@ -6,5 +6,7 @@
 # CONFIG_CMD_LOADS is not set
 # CONFIG_CMD_SETEXPR is not set
 CONFIG_CMD_DHCP=y
+CONFIG_CMD_EXT2=y
+CONFIG_CMD_FAT=y
 CONFIG_SYS_NS16550=y
 CONFIG_USE_PRIVATE_LIBGCC=y