drivers: edac: Add cache erp driver for llcc

Cache error reporting driver for single and double bit errors
on llcc cache. This driver takes care of dumping registers add
config options to enable and disable panic when these errors happen.

Change-Id: Ia5cc4bd604b9bcdd9f9147a06a4dbaa03ff600c6
Signed-off-by: Channagoud Kadabi <ckadabi@codeaurora.org>