Convert sound_trigger_hal/Android.mk to Android.bp am: aadb1dc327 am: 47e57dd3b9 am: e66135f6b6

Original change: https://android-review.googlesource.com/c/platform/hardware/knowles/athletico/sound_trigger_hal/+/1964939

Change-Id: I64a1a9a6911c1ec607651a59a0a5cda84f7e65e9