image_types_tegra.bbclass: add support for SDcard booting on AGX Xavier
image_types_tegra.bbclass: add support for SDcard booting on AGX Xavier

providing both doflash.sh and dosdcard.sh scripts in the tegraflash
bundle, splitting out the kernel/DTB/rootfs partitions onto the
SDcard.

Signed-off-by: Matt Madison <1fa2ef4755a9226cb9a0a4840bd89b158ac71391@madison.systems>

madisongh/meta-tegra,madisongh/meta-tegra,madisongh/meta-tegra,madisongh/meta-tegra,madisongh/meta-tegra