audio: Add android.hardware.audio[.common]@7.1-util modules

android.hardware.audio.common@7.1-util and
android.hardware.audio@7.1-util utilize the 7.1 XSD enums
conversion library and thus can work with the new
enum strings added in 7.1

Bug: 218504031
Test: atest VtsHalAudioV7_1TargetTest
Test: atest android.hardware.audio.common@7.0-util_tests
Test: atest android.hardware.audio.common@7.1-util_tests
Test: atest android.hardware.audio@7.0-util_tests
Test: atest android.hardware.audio@7.1-util_tests
Change-Id: Icc5a354cdc2e377a2a2424c28377bcb0ba05bf4e
(cherry picked from commit fa4a4f8d)
Merged-In: Icc5a354cdc2e377a2a2424c28377bcb0ba05bf4e