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/atngw100_defconfig b/configs/atngw100_defconfig
index 02f6f97..685d5ac 100644
--- a/configs/atngw100_defconfig
+++ b/configs/atngw100_defconfig
@@ -7,11 +7,15 @@
 CONFIG_AUTOBOOT_STOP_STR=" "
 # CONFIG_CMD_ELF is not set
 # CONFIG_CMD_XIMG is not set
+CONFIG_CMD_ASKENV=y
+CONFIG_CMD_MMC=y
 CONFIG_CMD_SF=y
 CONFIG_CMD_SPI=y
 # CONFIG_CMD_FPGA is not set
 # CONFIG_CMD_SOURCE is not set
 # CONFIG_CMD_SETEXPR is not set
 CONFIG_CMD_DHCP=y
+CONFIG_CMD_EXT2=y
+CONFIG_CMD_FAT=y
 CONFIG_SPI_FLASH=y
 CONFIG_SPI_FLASH_ATMEL=y