fix(spm): add ARM_ARCH_MAJOR option

Add ARM_ARCH_MAJOR=8 option to SPM tf configs already specifying
ARM_ARCH_MINOR=5. This is to avoid any ambiguity on the architectural
major version in particular when one or both the options is forced by
the build flow of platform.

Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
Change-Id: I7be6dfabbc230a4d08242dae834689ebc84567b8
12 files changed