refactor(lib/arch): add macro to update SIMD related trap fields

Add macro SIMD_ENABLE_CPTR_FLAGS, SIMD_DISABLE_ALL_CPTR_FLAGS to update
SIMD related fields in the value used to write CPTR_EL2 register.

Signed-off-by: Arunachalam Ganapathy <arunachalam.ganapathy@arm.com>
Change-Id: Ib820dd94cc5e294ec3a2f5c269bd473f4441903b
5 files changed