Convert CONFIG_ENV_IS_IN_ONENAND to Kconfig
This converts the following to Kconfig:
CONFIG_ENV_IS_IN_ONENAND
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/configs/vct_platinumavc_onenand_small_defconfig b/configs/vct_platinumavc_onenand_small_defconfig
index d3351e8..de7b500 100644
--- a/configs/vct_platinumavc_onenand_small_defconfig
+++ b/configs/vct_platinumavc_onenand_small_defconfig
@@ -3,6 +3,7 @@
CONFIG_VCT_PLATINUMAVC=y
CONFIG_VCT_ONENAND=y
CONFIG_VCT_SMALL_IMAGE=y
+CONFIG_ENV_IS_IN_ONENAND=y
CONFIG_BOOTDELAY=5
CONFIG_SYS_CONSOLE_INFO_QUIET=y
CONFIG_SYS_PROMPT="$ "