Convert CONFIG_BOARD_EARLY_INIT_F to Kconfig
This converts the following to Kconfig:
CONFIG_BOARD_EARLY_INIT_F
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/configs/mx6cuboxi_defconfig b/configs/mx6cuboxi_defconfig
index a1c3dac..ddc2522 100644
--- a/configs/mx6cuboxi_defconfig
+++ b/configs/mx6cuboxi_defconfig
@@ -14,6 +14,7 @@
CONFIG_DISTRO_DEFAULTS=y
CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=arch/arm/imx-common/spl_sd.cfg,MX6QDL"
# CONFIG_SYS_STDIO_DEREGISTER is not set
+CONFIG_BOARD_EARLY_INIT_F=y
CONFIG_SPL=y
# CONFIG_CMD_IMLS is not set
# CONFIG_CMD_FLASH is not set