Convert CONFIG_ENV_IS_IN_SPI_FLASH to Kconfig
This converts the following to Kconfig:
CONFIG_ENV_IS_IN_SPI_FLASH
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/configs/dreamplug_defconfig b/configs/dreamplug_defconfig
index 8f3ffcf..640096b 100644
--- a/configs/dreamplug_defconfig
+++ b/configs/dreamplug_defconfig
@@ -2,6 +2,7 @@
CONFIG_KIRKWOOD=y
CONFIG_TARGET_DREAMPLUG=y
CONFIG_IDENT_STRING="\nMarvell-DreamPlug"
+CONFIG_ENV_IS_IN_SPI_FLASH=y
CONFIG_BOOTDELAY=3
# CONFIG_DISPLAY_BOARDINFO is not set
CONFIG_HUSH_PARSER=y