Convert CONFIG_ENV_IS_IN_FAT to Kconfig
This converts the following to Kconfig:
CONFIG_ENV_IS_IN_FAT
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/configs/am335x_evm_defconfig b/configs/am335x_evm_defconfig
index 204d817..4ea5617 100644
--- a/configs/am335x_evm_defconfig
+++ b/configs/am335x_evm_defconfig
@@ -7,6 +7,7 @@
CONFIG_DISTRO_DEFAULTS=y
CONFIG_SPL_LOAD_FIT=y
CONFIG_SYS_EXTRA_OPTIONS="NAND"
+CONFIG_ENV_IS_IN_FAT=y
CONFIG_SYS_CONSOLE_INFO_QUIET=y
CONFIG_VERSION_VARIABLE=y
CONFIG_ARCH_MISC_INIT=y