soc: msm_audio_ion: Add audio memory protection API call for MDM

Add audio memory protection scm API call in msm_audio_ion_probe
to protect audio ion memory region. Fetch the base address and
size of audio-mem using CMA APIs and give them as arguments to
scm call. SCM driver internally calls TZ APIs.

CRs-Fixed: 2010176
Signed-off-by: Viraja Kommaraju <virajak@codeaurora.org>
Change-Id: I2c0852317bc2497418170683b75a4fdbe7d44e2e