msm: Perf: Add PL310 support for the 8625 and 7627A

Enable perf events support for the PL310 L2CC. Include
single kernel image support for both targets.

Change-Id: Iaad714b538782638a6a299e11dbb1d989b38a563
Signed-off-by: Ashwin Chaugule <ashwinc@codeaurora.org>
8 files changed