Revert "Remove proc access from hal_audio."

Reason: breaks "Ok google". Soundtrigger module needs to access /proc/asound/pcm.

This reverts commit 5cccb249151ce06f9e05ad9abf5a1c362712e212.

Bug: 67930353
Change-Id: I67e0912a6795b3715a3321d3fe5147f49cebc9b5
1 file changed