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/picosam9g45_defconfig b/configs/picosam9g45_defconfig
index aa61e4b..326158d 100644
--- a/configs/picosam9g45_defconfig
+++ b/configs/picosam9g45_defconfig
@@ -10,6 +10,7 @@
CONFIG_SPL_WATCHDOG_SUPPORT=y
CONFIG_SPL_FAT_SUPPORT=y
CONFIG_SYS_EXTRA_OPTIONS="AT91SAM9M10G45,SYS_USE_MMC"
+CONFIG_ENV_IS_IN_FAT=y
CONFIG_BOOTDELAY=3
# CONFIG_CONSOLE_MUX is not set
CONFIG_SYS_CONSOLE_IS_IN_ENV=y