fix libagl surface initialization

this broke recently when removing copybit support.

Change-Id: I5cc7ff7f49268411c6c2cfb2d97590d52b13dbd5
diff --git a/opengl/libagl/egl.cpp b/opengl/libagl/egl.cpp
index 0d03361..03db8d7 100644
--- a/opengl/libagl/egl.cpp
+++ b/opengl/libagl/egl.cpp
@@ -338,6 +338,10 @@
     nativeWindow(window), buffer(0), previousBuffer(0), module(0),
     bits(NULL)
 {
+    hw_module_t const* pModule;
+    hw_get_module(GRALLOC_HARDWARE_MODULE_ID, &pModule);
+    module = reinterpret_cast<gralloc_module_t const*>(pModule);
+
     pixelFormatTable = gglGetPixelFormatTable();
     
     // keep a reference on the window