Add audioserver to Watchdog stacks

Needed for debugging after mediaserver split.

Bug: 27548913
Bug: 27570954
Change-Id: I7d1e92494c0543f10f3193153e3e9afdafd41655
diff --git a/services/core/java/com/android/server/Watchdog.java b/services/core/java/com/android/server/Watchdog.java
index 772a15c..11888ff 100644
--- a/services/core/java/com/android/server/Watchdog.java
+++ b/services/core/java/com/android/server/Watchdog.java
@@ -64,6 +64,7 @@
 
     // Which native processes to dump into dropbox's stack traces
     public static final String[] NATIVE_STACKS_OF_INTEREST = new String[] {
+        "/system/bin/audioserver",
         "/system/bin/mediaserver",
         "/system/bin/sdcard",
         "/system/bin/surfaceflinger"