arm64: compat: Add cp15_32 and cp15_64 handler arrays

We're now ready to start handling CP15 access. Let's add (empty)
arrays for both 32 and 64bit accessors, and the code that deals
with them.

Change-Id: I9be58d3cb42e631924ba739ce34421bbeb6452b5
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Git-commit: 2a8905e18c55d5576d7a53da495b4de0cfcbc459
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/


Signed-off-by: Neeraj Upadhyay <neeraju@codeaurora.org>