defconfig: arm64: msm: add msm-perf config

Add support for perf equivalent of the msm_defconfig
which is common for all msm-64 chipsets.

Change-Id: I8d49c1594756dc7f3c4423db17d382debb43c607
Signed-off-by: Abhimanyu Kapur <abhimany@codeaurora.org>