Convert CONFIG_ENV_IS_IN_FLASH to Kconfig
This converts the following to Kconfig:
CONFIG_ENV_IS_IN_FLASH
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/configs/MPC8536DS_36BIT_defconfig b/configs/MPC8536DS_36BIT_defconfig
index 5db680b..1d40e2f 100644
--- a/configs/MPC8536DS_36BIT_defconfig
+++ b/configs/MPC8536DS_36BIT_defconfig
@@ -6,6 +6,7 @@
CONFIG_PHYS_64BIT=y
CONFIG_OF_BOARD_SETUP=y
CONFIG_OF_STDOUT_VIA_ALIAS=y
+CONFIG_ENV_IS_IN_FLASH=y
CONFIG_BOOTDELAY=10
# CONFIG_CONSOLE_MUX is not set
CONFIG_BOARD_EARLY_INIT_F=y