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/zynq_zc770_xm012_defconfig b/configs/zynq_zc770_xm012_defconfig
index 943efdb..4cf15d5 100644
--- a/configs/zynq_zc770_xm012_defconfig
+++ b/configs/zynq_zc770_xm012_defconfig
@@ -7,6 +7,7 @@
CONFIG_FIT_SIGNATURE=y
CONFIG_FIT_VERBOSE=y
CONFIG_SYS_EXTRA_OPTIONS="ZC770_XM012"
+CONFIG_ENV_IS_IN_FLASH=y
# CONFIG_DISPLAY_CPUINFO is not set
CONFIG_SPL=y
CONFIG_SPL_OS_BOOT=y