Use u-boot.bin at crosvm tests

Exercise u-boot, at host VM load time for now, to make sure it's
working.

Test: make test passes on test-crosvm-pkvm-helloworld, other tests
    aren't broken either.
Fixes: 181212750
Change-Id: I8facf2367768bad9fefca19921bc14dc98548e6e
2 files changed
tree: 6557f47b16d82f55e1af7bf59ad9248000f762e0
  1. aarch64/
  2. crosvm/
  3. cuttlefish/
  4. kvm-unit-tests/
  5. common.inc
  6. Makefile