sdm: Add API for SR and PU control from Dpps

In current design, Dpps uses binder calls to trigger screen refresh and
control partial update state. Binder calls can introduce delays if
CPU is heavily loaded. Recent change that moved Dpps into SDM allows
optimization to avoid the binder call route.
This change adds an API for Dpps to trigger screen refresh and
set partial update directly without binder call.

CRs-Fixed: 2242446
Change-Id: I45d3e799766f61812593dced8e68c03ea909b1c6
9 files changed