Add ro.hardware.audio.hearing_aid

Bug: 69623109
Change-Id: I7d194a3489fc5ff278cef7bebe9bfe6c39d3b2b8
(cherry-picked from 4a40c592404bdc2032067f4a3fac2f33b9246aa0)

public/property_contexts

@@ -212,6 +212,7 @@ ro.frp.pst u:object_r:exported_default_prop:s0 exact string
 ro.hardware.activity_recognition u:object_r:exported_default_prop:s0 exact string
 ro.hardware.audio u:object_r:exported_default_prop:s0 exact string
 ro.hardware.audio.a2dp u:object_r:exported_default_prop:s0 exact string
+ro.hardware.audio.hearing_aid u:object_r:exported_default_prop:s0 exact string
 ro.hardware.audio.primary u:object_r:exported_default_prop:s0 exact string
 ro.hardware.audio.usb u:object_r:exported_default_prop:s0 exact string
 ro.hardware.audio_policy u:object_r:exported_default_prop:s0 exact string