gralloc: Mark framebuffer as ION memory

Change-Id: I859d4d03b62279b7e66ba52e3215fe7394a63434
diff --git a/libgralloc/framebuffer.cpp b/libgralloc/framebuffer.cpp
index 57df5b1..653468d 100644
--- a/libgralloc/framebuffer.cpp
+++ b/libgralloc/framebuffer.cpp
@@ -329,7 +329,7 @@
     size_t fbSize = roundUpToPageSize(finfo.line_length * info.yres)*
                     module->numBuffers;
     module->framebuffer = new private_handle_t(fd, fbSize,
-                                        private_handle_t::PRIV_FLAGS_USES_PMEM,
+                                        private_handle_t::PRIV_FLAGS_USES_ION,
                                         BUFFER_TYPE_UI,
                                         module->fbFormat, info.xres, info.yres);
     void* vaddr = mmap(0, fbSize, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);