gralloc/metadata: Add support for single buffer mode

Add support for setting single buffer mode on a buffer via gralloc
perform from gfx

Change-Id: I7640b3b984ebc1c4c8fcaedfb3e222ec989a84cb
diff --git a/libqdutils/qdMetaData.cpp b/libqdutils/qdMetaData.cpp
index a66704e..626f250 100644
--- a/libqdutils/qdMetaData.cpp
+++ b/libqdutils/qdMetaData.cpp
@@ -102,6 +102,9 @@
         case SET_IGC:
             data->igc = *((IGC_t *)param);
             break;
+        case SET_SINGLE_BUFFER_MODE:
+            data->isSingleBufferMode = *((bool *)param);
+            break;
         default:
             ALOGE("Unknown paramType %d", paramType);
             break;