Few more small meminfo improvements.

- Add in category for graphics driver, and knowledge about it
  for N5 (more devices will be added later).
- Renaming the labels for the .oat and .art files to be just
  that, so it is clear what they are talking about.

Change-Id: I663ca8bd2febce41fcdde74b0d3a96ef9325edf1
diff --git a/core/jni/android_os_Debug.cpp b/core/jni/android_os_Debug.cpp
index 9ec9993..178bab6 100644
--- a/core/jni/android_os_Debug.cpp
+++ b/core/jni/android_os_Debug.cpp
@@ -46,10 +46,12 @@
     HEAP_UNKNOWN,
     HEAP_DALVIK,
     HEAP_NATIVE,
+
     HEAP_DALVIK_OTHER,
     HEAP_STACK,
     HEAP_CURSOR,
     HEAP_ASHMEM,
+    HEAP_GL_DEV,
     HEAP_UNKNOWN_DEV,
     HEAP_SO,
     HEAP_JAR,
@@ -297,7 +299,11 @@
             } else if (strncmp(name, "[stack", 6) == 0) {
                 whichHeap = HEAP_STACK;
             } else if (strncmp(name, "/dev/", 5) == 0) {
-                whichHeap = HEAP_UNKNOWN_DEV;
+                if (strncmp(name, "/dev/kgsl-3d0", 13) == 0) {
+                    whichHeap = HEAP_GL_DEV;
+                } else {
+                    whichHeap = HEAP_UNKNOWN_DEV;
+                }
             } else if (nameLen > 3 && strcmp(name+nameLen-3, ".so") == 0) {
                 whichHeap = HEAP_SO;
                 is_swappable = true;