disable SoundTriggerService in safe mode

Bug: 150569186
Test: confirm `dumpsys voiceinteraction` shows no active service
&& confirm `dumpsys soundtrigger_middleware` shows no API calls.

Change-Id: I6b5879c662826e86a6f41f3c3aea444f0674f24c
diff --git a/services/voiceinteraction/java/com/android/server/soundtrigger/SoundTriggerService.java b/services/voiceinteraction/java/com/android/server/soundtrigger/SoundTriggerService.java
index 3196758..00cb6dc 100644
--- a/services/voiceinteraction/java/com/android/server/soundtrigger/SoundTriggerService.java
+++ b/services/voiceinteraction/java/com/android/server/soundtrigger/SoundTriggerService.java
@@ -207,7 +207,13 @@
 
     @Override
     public void onBootPhase(int phase) {
-        if (PHASE_SYSTEM_SERVICES_READY == phase) {
+        Slog.d(TAG, "onBootPhase: " + phase + " : " + isSafeMode());
+        if (PHASE_DEVICE_SPECIFIC_SERVICES_READY == phase) {
+            if (isSafeMode()) {
+                Slog.w(TAG, "not enabling SoundTriggerService in safe mode");
+                return;
+            }
+
             initSoundTriggerHelper();
             mLocalSoundTriggerService.setSoundTriggerHelper(mSoundTriggerHelper);
         } else if (PHASE_THIRD_PARTY_APPS_CAN_START == phase) {