CI: Azure: Further condense jobs

We have a maximum of 10 parallel build jobs, and each job must complete
in less than 60 minutes. The overall run time must also be less than 6
hours. Condense a number of jobs so that we have less potential
bottlenecks in terms of waiting for a parallel slot to open up for a job
to be run.

Signed-off-by: Tom Rini <trini@konsulko.com>