Integrate meta-seco-imx/u-boot-seco-imx/d18-dt-split
requested to merge integrate/meta-seco-imx/u-boot-seco-imx/d18-dt-split/into/kirkstone into kirkstone
Integrate u-boot-seco-imx/d18-dt-split
--
[ALL] add default carrier overlay configuration support
--
[ALL] remove unused var DEFAULT_OVERLAY_FILE