get rid of dependency on copybit HAL module

#endif

#include <private/pixelflinger/ggl_context.h>

#include <hardware/copybit.h>

#include <hardware/gralloc.h>

#include <GLES/gl.h>

struct copybits_context_t {

    // A handle to the blit engine, if it exists, else NULL.

    copybit_device_t*       blitEngine;

    int32_t                 minScale;

    int32_t                 maxScale;

    android_native_buffer_t* drawSurfaceBuffer;