ci: add cortex-X4 and cortex-X925 FVP's

Currently used FVP version has support for both Cortex-X4 and
Cortex-X925 support add them to ci utils.

Change-Id: I45402251c618bb7bf802f909eed535b2b27424b5
Signed-off-by: Govindraj Raja <govindraj.raja@arm.com>
6 files changed