hqd : Use proper type casts

    * Remove compilation errors
    * Use proper type casts

Change-Id: I1d44c2a2362a1fdd4d6e412ea816d4078e8355c9
:
diff --git a/libqdutils/qd_utils.cpp b/libqdutils/qd_utils.cpp
index 0698b33..c27167f 100644
--- a/libqdutils/qd_utils.cpp
+++ b/libqdutils/qd_utils.cpp
@@ -87,7 +87,7 @@
         return 0;
     }
 
-    size = read(edidFile, (char*)buffer, EDID_RAW_DATA_SIZE);
+    size = (int)read(edidFile, (char*)buffer, EDID_RAW_DATA_SIZE);
     close(edidFile);
     return size;
 }