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/T1042D4RDB_SPIFLASH_defconfig b/configs/T1042D4RDB_SPIFLASH_defconfig
index c6fcaf3..6e6b6a1 100644
--- a/configs/T1042D4RDB_SPIFLASH_defconfig
+++ b/configs/T1042D4RDB_SPIFLASH_defconfig
@@ -13,6 +13,7 @@
CONFIG_OF_BOARD_SETUP=y
CONFIG_OF_STDOUT_VIA_ALIAS=y
CONFIG_SYS_EXTRA_OPTIONS="RAMBOOT_PBL,SPL_FSL_PBL,SPIFLASH"
+CONFIG_ENV_IS_IN_SPI_FLASH=y
CONFIG_BOOTDELAY=10
CONFIG_SILENT_CONSOLE=y
# CONFIG_CONSOLE_MUX is not set