Kumar Gala [off-list ref] writes:

The top level qcom,msm-id and qcom,board-id are utilized by bootloaders
on Qualcomm MSM platforms to determine which device tree should be
utilized and passed to the kernel.

Cc: <redacted>
Signed-off-by: Kumar Gala <redacted>

Is this the special magic that allows qcom bootloaders to take a kernel
plus multiple DTBs and figure out which DTB to pass?

Kevin