exynos: Import sthal

* From https://gitlab.com/Linaro/96boards/e850-96/platform/hardware/samsung_slsi/-/tree/3e8336d6f04504fb2377a52909c98cd38ac1d368/exynos/libaudio/sthal

Change-Id: I1c9ec7f159e8184ff23f1dc771630ad5f12423c6
Signed-off-by: Francescodario Cuzzocrea <bosconovic@gmail.com>
7 files changed