Convert all comments into "doxygen-ready" comments.

Bug: 36453077
Test: mma
Change-Id: I0b1f77dfae5d2258969e33d85ecf45401ffbdfaa
diff --git a/memtrack/1.0/IMemtrack.hal b/memtrack/1.0/IMemtrack.hal
index ae9d960..a329032 100644
--- a/memtrack/1.0/IMemtrack.hal
+++ b/memtrack/1.0/IMemtrack.hal
@@ -16,7 +16,7 @@
 
 package android.hardware.memtrack@1.0;
 
-/*
+/**
  * The Memory Tracker HAL is designed to return information about
  * device-specific memory usage.
  * The primary goal is to be able to track memory that is not
@@ -30,7 +30,7 @@
  * setup actions and is called once before any calls to getMemory().
  */
 interface IMemtrack {
-    /*
+    /**
      * getMemory() populates MemtrackRecord vector with the sizes of memory
      * plus associated flags for that memory.
      *