ARM: dts: msm: Add llcc perfmon device for sdm845

Adding llcc perfmon configuration. Perfmon driver can monitor llcc
hardware events, which can be used for profiling.

Change-Id: I1f22c9df24952aad26c2b8e67b2afcbc79c9fb77
Signed-off-by: Sankaran Nampoothiri <snampoot@codeaurora.org>