Early test termination for unsupported models

Some service drivers won't be able to support all operations. In those
cases, try to prepare the model anyway. If it works, proceed with the
test; if it fails, terminate the test early.

For example, the hvx nn service does not support svdf, so it should
attempt to prepare the model, but the test should not fail if the hvx
driver reports an error.

Bug: 63905942
Test: mm, expected behavior when running on hvx service
Change-Id: I51aa1911145f0d17590906c21314d2bdc24cffea