clk: msm: clock-osm: add scm_io_write calls to program secure registers

Use secure IO write calls to program the APM crossover corner
and registers 47 and 48 of OSM sequencer architectural space.
Values for these registers reside in the HLOS, but must be
programmed from a secure domain.

Change-Id: I961bde48822adcbfbbb28130f2872104de5c11ce
CRs-Fixed: 992982
Signed-off-by: Osvaldo Banuelos <osvaldob@codeaurora.org>