This patch adds AArch32 state support for ARM Cortex-A53,
Cortex-A57 and Cortex-A72 MPCore Processor in the CPU specific
operations framework.

NOTE: CPU errata handling code is not present in this patch.

Change-Id: I01eb3e028e40dde37565707ebc99e06e7a0c113d
Signed-off-by: Yatharth Kochar <yatharth.kochar@arm.com>
Signed-off-by: dp-arm <dimitris.papastamos@arm.com>