defconfig: msm: Enable llcc_perfmon for SDM845

DLKM support added for llcc_perfmon driver config file
sdm845_defconfig & sdm845-perf_defconfig for profiling llcc.

Change-Id: Ib1392998836b48081338f4a02d3637c494208943
Signed-off-by: Sankaran Nampoothiri <snampoot@codeaurora.org>