Changeset 11464:d0b3c18e9e75
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arch, cpu: Architectural Register structural indexing

Replace the unified register mapping by a structure associating a
class and an index. It is now much easier to know which class of
register the index is refering to.  Also, when adding a new class
there is no need to modify existing ones.

Change-Id: I55b3ac80763702aa2cd3ed2cbff0a75ef7620373
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>