Convert CONFIG_SPL_SERIAL_SUPPORT to Kconfig
Move this option to Kconfig and tidy up existing uses.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/configs/platinum_picon_defconfig b/configs/platinum_picon_defconfig
index 0ed41b6..b208d6d 100644
--- a/configs/platinum_picon_defconfig
+++ b/configs/platinum_picon_defconfig
@@ -9,6 +9,7 @@
CONFIG_SPL_LIBDISK_SUPPORT=y
CONFIG_SPL_MMC_SUPPORT=y
CONFIG_SPL_NAND_SUPPORT=y
+CONFIG_SPL_SERIAL_SUPPORT=y
CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=arch/arm/imx-common/spl_sd.cfg,MX6DL"
CONFIG_BOOTDELAY=3
CONFIG_SPL=y