exynos: audiohal_comv1: Import MMAP hardware volume control from T BSP

* Supported by exynos9830.

Change-Id: Ib56d8be1d5bd40f3ee9a7ea4f7fd3970c366122a
Signed-off-by: Francescodario Cuzzocrea <bosconovic@gmail.com>
3 files changed