tegra124-nyan-big: convert to Depthcharge and add test plans
tegra124-nyan-big: convert to Depthcharge and add test plans

Update the tegra124-nyan-big Chromebook to boot with the standard
Chrome OS Depthcharge bootloader.  Also enable common test plans.

Signed-off-by: Guillaume Tucker <e7e20b7c30f19d4ca6b81319ef81bf200369d137@collabora.com>

kernelci/lava-ci-staging,kernelci/lava-ci-staging,kernelci/lava-ci-staging