device/qcom: Start audiod service to monitor adsp restart

Start audiod service during device boot up to monitor adsp status.
This service also reports adsp status change to user space.

Change-Id: I969fb2e6a1dba8722d4ef58d6aa243563a40134c
diff --git a/init.target.rc b/init.target.rc
index 061a055..dd19458 100644
--- a/init.target.rc
+++ b/init.target.rc
@@ -92,3 +92,8 @@
    user root
    group root
 
+service audiod /system/bin/audiod
+   class late_start
+   user system
+   group system
+