Add a new audio HAL for native VMM audio

Most VMMs emulate audio hardware which is compatible with a Linux ALSA
driver. We can take advantage of this standard interface using tinyalsa
and eliminate the complexity of forwarding audio through a custom
method. This eliminates the dependency on the vsoc driver for audio.

Bug: 126955561
Test: local build, tested audio was working with ALSA enabled kernel
Change-Id: Iefade9afbf80d91ae0ea7dac8aa4c24d8490f977