gpt: add GPT L1 alignment tests

L1 table alignment tests are added in this patch. The tests will
check whether a misaligned set of PAS regions is suitable to
initialize the L1 tables.

Signed-off-by: Juan Pablo Conde <juanpablo.conde@arm.com>
Co-developed-by: Kathleen Capella <kathleen.capella@arm.com>
Change-Id: I8bd0349806fe0eb714b32044172a091c2277fad5
3 files changed