hwc: Clean up scattered definitions of commonly used constants/values

Clean up scattered definitions of commonly used constants/values.
There is no need in re-defining these in several places.

Change-Id: I22c082b56646cb02d5ae4733d110afc81aaff50a
diff --git a/libqdutils/qd_utils.cpp b/libqdutils/qd_utils.cpp
index f67de52..5726202 100644
--- a/libqdutils/qd_utils.cpp
+++ b/libqdutils/qd_utils.cpp
@@ -28,11 +28,10 @@
  */
 
 #include "qd_utils.h"
-
-
-#define MAX_FRAME_BUFFER_NAME_SIZE      (80)
 #define QD_UTILS_DEBUG 0
 
+namespace qdutils {
+
 int getHDMINode(void)
 {
     FILE *displayDeviceFP = NULL;
@@ -121,3 +120,4 @@
     rect.bottom = srcHeight + rect.top;
 }
 
+}; //namespace qdutils