[yocto] Autobuilder migration status.

[Trevor Woerner]

The new autobuilder looks great! One thing that's nice is how easy it
is to look at the build and figure out from what commit the build is
based.

Clicking around in some of those builds, though, I can't seem to
figure out what the various configurations are. For example:
meta-fsl-arm has a number of machine definitions, which MACHINE is
being used for the autobuilder build? Also, I can't seem to figure out
which image is being built either; core-image-minimal? sato?

Best regards,
    Trevor