meta-zaius: Use P9 features and enable VCS control

Set Zaius machine conf to use P9 features (pdbg host control and VCS
workaround).
Use Zaius vcs-control recipe for machine-specific VCS workaround
components (virtual/p9-vcs-workaround).

Signed-off-by: Xo Wang <xow@google.com>
Change-Id: Ib75779da074b47c4fa335c5d2dfc40dc1bb82f04
1 file changed