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/vct_platinum_defconfig b/configs/vct_platinum_defconfig
index f8b9d7e..dbb4bcf 100644
--- a/configs/vct_platinum_defconfig
+++ b/configs/vct_platinum_defconfig
@@ -1,6 +1,7 @@
CONFIG_MIPS=y
CONFIG_TARGET_VCT=y
CONFIG_VCT_PLATINUM=y
+CONFIG_ENV_IS_IN_FLASH=y
CONFIG_BOOTDELAY=5
CONFIG_SYS_CONSOLE_INFO_QUIET=y
CONFIG_SYS_PROMPT="$ "