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/M5235EVB_Flash32_defconfig b/configs/M5235EVB_Flash32_defconfig
index 19596cb..ee8ba64 100644
--- a/configs/M5235EVB_Flash32_defconfig
+++ b/configs/M5235EVB_Flash32_defconfig
@@ -2,6 +2,7 @@
CONFIG_SYS_TEXT_BASE=0xFFC00000
CONFIG_TARGET_M5235EVB=y
CONFIG_SYS_EXTRA_OPTIONS="NORFLASH_PS32BIT"
+CONFIG_ENV_IS_IN_FLASH=y
CONFIG_BOOTDELAY=1
# CONFIG_DISPLAY_BOARDINFO is not set
# CONFIG_CMD_LOADB is not set