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/TWR-P1025_defconfig b/configs/TWR-P1025_defconfig
index 906ada4..e48b9bc 100644
--- a/configs/TWR-P1025_defconfig
+++ b/configs/TWR-P1025_defconfig
@@ -7,6 +7,7 @@
CONFIG_OF_BOARD_SETUP=y
CONFIG_OF_STDOUT_VIA_ALIAS=y
CONFIG_SYS_EXTRA_OPTIONS="TWR_P1025"
+CONFIG_ENV_IS_IN_FLASH=y
CONFIG_BOOTDELAY=10
CONFIG_BOARD_EARLY_INIT_F=y
CONFIG_HUSH_PARSER=y