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/zynq_zc706_defconfig b/configs/zynq_zc706_defconfig
index 825346a..35722e9 100644
--- a/configs/zynq_zc706_defconfig
+++ b/configs/zynq_zc706_defconfig
@@ -6,6 +6,7 @@
CONFIG_FIT=y
CONFIG_FIT_SIGNATURE=y
CONFIG_FIT_VERBOSE=y
+CONFIG_ENV_IS_IN_SPI_FLASH=y
# CONFIG_DISPLAY_CPUINFO is not set
CONFIG_SPL=y
CONFIG_SPL_OS_BOOT=y