msm: npu: Add MSM_NPU_SET_PROP API to set npu driver/fw property

This change is to add MSM_NPU_SET_PROP API to allow user app to
set driver and fw properties. Initially user app can set fw
state/performance mode/dcvs mode using this api.

Change-Id: I860eb139d008bc198e2e9afb86e6b2b7f20b2140
Signed-off-by: Jilai Wang <jilaiw@codeaurora.org>