drivers: soc: Add support for SM6150 llcc driver

Add support for sm6150-llcc driver. The driver is
written by taking reference from sm6150-llcc driver
in msm-4.14 kernel at commit id "5d390f121ba7".

Change-Id: I53f200460e3b18dfe3453923745104f8e804b9c5
Signed-off-by: Saurabh Ambulkar <sambulka@codeaurora.org>