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/vct_premium_onenand_defconfig b/configs/vct_premium_onenand_defconfig
index 1d73069..31b89e3 100644
--- a/configs/vct_premium_onenand_defconfig
+++ b/configs/vct_premium_onenand_defconfig
@@ -11,5 +11,6 @@
 CONFIG_CMD_DHCP=y
 CONFIG_CMD_PING=y
 CONFIG_CMD_SNTP=y
+CONFIG_CMD_FAT=y
 CONFIG_SYS_NS16550=y
 CONFIG_USE_PRIVATE_LIBGCC=y