EARC: Add Policy for EArc Service

Test: atest vts_treble_vintf_framework_test
      atest vts_treble_vintf_vendor_test
Bug: 240388105
Change-Id: I561f647a68553fa0134f2e1bd65b0f18dd1785f1
diff --git a/private/service_contexts b/private/service_contexts
index 6e4cfe8..49912ac 100644
--- a/private/service_contexts
+++ b/private/service_contexts
@@ -88,6 +88,7 @@
 android.hardware.soundtrigger3.ISoundTriggerHw/default               u:object_r:hal_audio_service:s0
 android.hardware.thermal.IThermal/default                            u:object_r:hal_thermal_service:s0
 android.hardware.tv.cec.IHdmiCec/default                             u:object_r:hal_tv_hdmi_cec_service:s0
+android.hardware.tv.earc.IEArc/default                               u:object_r:hal_tv_earc_service:s0
 android.hardware.tv.hdmi.IHdmi/default                               u:object_r:hal_tv_hdmi_service:s0
 android.hardware.tv.tuner.ITuner/default                             u:object_r:hal_tv_tuner_service:s0
 android.hardware.tv.input.ITvInput/default                           u:object_r:hal_tv_input_service:s0