drivers: soc: Update the max capacity programming

LLCC has four instances, the total size of the memory is divided equally
among these four instances. SW uses broadcast registers to program the
LLCC, meaning if SW writes to broadcast register the value reflects in
all the llcc instances. So when max capacity for a client is programmed
we need to divide it by four, otherwise the max capacity for a client
will exceed the max capacity of LLCC.

Change-Id: Ifbc6b712689bb70d3b35c7d88cc72fbb3eb25d37
Signed-off-by: Channagoud Kadabi <ckadabi@codeaurora.org>
Signed-off-by: Runmin Wang <runminw@codeaurora.org>