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/mpc8308_p1m_defconfig b/configs/mpc8308_p1m_defconfig
index ee92e4f..0dcdd3b 100644
--- a/configs/mpc8308_p1m_defconfig
+++ b/configs/mpc8308_p1m_defconfig
@@ -3,6 +3,7 @@
CONFIG_TARGET_MPC8308_P1M=y
CONFIG_OF_BOARD_SETUP=y
CONFIG_OF_STDOUT_VIA_ALIAS=y
+CONFIG_ENV_IS_IN_FLASH=y
CONFIG_BOOTDELAY=5
CONFIG_HUSH_PARSER=y
CONFIG_CMD_I2C=y