ci: test with pabandon

Gelas and Travis support powerdown abandon which is not modelled by the
FVP. TC includes these cores and on a real system should be able to deal
with pabandon. So add a fake pabandon to the main TC4 config so we can
test it.

Signed-off-by: Boyan Karatotev <boyan.karatotev@arm.com>
Change-Id: I4b9b306f49b3b1c90593b424057816e9ea9cc0d0
3 files changed