Inherit fvpboot so that the FVP binary is fetched and configuration
generated.

Configure the FVP to forward host port 8022 to port 22 locally, and
tell testimage to SSH to localhost:8022. This has the limitation that
only one testimage can run per machine, but this will be removed shortly.

Disable the parselogs test case, as there are some harmless warnings in
the dmesg which cause it to fail.  Currently meta-arm can't extend the
whitelist of ignorable warnings.

The FVP binaries are x86-64 only, so tag the job appropriately.
Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Jon Mason <jon.mason@arm.com>