u-boot:mc3: Add support for multiple devicetrees for u-boot
Adding new variable UBOOT_ADDITIONAL_DTB_NAMES to specify more then one devicetree, use it in the u-boot and the imx-boot recipe to integrate everything into one fit image.
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Adding new variable UBOOT_ADDITIONAL_DTB_NAMES to specify more then one devicetree, use it in the u-boot and the imx-boot recipe to integrate everything into one fit image.