hwc: Do not use fb handle in hwc_prepare

Do not use fb handle in prepare. Use displayFrame for dimensions,
align them and hardcode format

Change-Id: I5c494a74a807d3a52a1c88257494b58c583700f5
diff --git a/libhwcomposer/hwc_uevents.cpp b/libhwcomposer/hwc_uevents.cpp
index 5cb87f8..10afc92 100644
--- a/libhwcomposer/hwc_uevents.cpp
+++ b/libhwcomposer/hwc_uevents.cpp
@@ -55,7 +55,7 @@
     if (compositionType & (qdutils::COMPOSITION_TYPE_DYN |
                            qdutils::COMPOSITION_TYPE_MDP |
                            qdutils::COMPOSITION_TYPE_C2D)) {
-        ctx->mCopyBit[dpy] = new CopyBit();
+        ctx->mCopyBit[dpy] = new CopyBit(ctx, dpy);
     }
 }