refactor(handoff): downgrade error messages

Some APIs, like `transfer_list_check_header`, are used preemptively to
determine if a new TL needs to be initialized. If we validate a TL and
anticipate its contents to be invalid or corrupted, logging these as
error message isn't helpful.

Change-Id: Ic22378828548d48f73aa74d494f110fbd11857f4
Signed-off-by: Harrison Mutai <harrison.mutai@arm.com>
1 file changed