feat(handoff): add measured boot tftf config

Add test configuration to test firmware handoff with the measured boot
enabled. In TFTF receive the transfer list and if there's a present
event log, run some sanity checks to make sure that the log is valid.
Dump the event log for processing by the expect scripts.

Change-Id: Icbcd00ca739d8b47ba66e64745193f2432659334
Signed-off-by: Harrison Mutai <harrison.mutai@arm.com>
7 files changed