drm/vmwgfx: Delete mmaping functions

{

}

static void *vmw_prime_dmabuf_vmap(struct dma_buf *dma_buf)

{

	return NULL;

}

static void vmw_prime_dmabuf_vunmap(struct dma_buf *dma_buf, void *vaddr)

{

}

static void *vmw_prime_dmabuf_kmap(struct dma_buf *dma_buf,

		unsigned long page_num)

{

	return NULL;

}

static void vmw_prime_dmabuf_kunmap(struct dma_buf *dma_buf,

		unsigned long page_num, void *addr)

{

}

static int vmw_prime_dmabuf_mmap(struct dma_buf *dma_buf,

				 struct vm_area_struct *vma)

{

	WARN_ONCE(true, "Attempted use of dmabuf mmap. Bad.\n");

	return -ENOSYS;

}

const struct dma_buf_ops vmw_prime_dmabuf_ops =  {

	.attach = vmw_prime_map_attach,

	.detach = vmw_prime_map_detach,

	.map_dma_buf = vmw_prime_map_dma_buf,

	.unmap_dma_buf = vmw_prime_unmap_dma_buf,

	.release = NULL,

	.map = vmw_prime_dmabuf_kmap,

	.unmap = vmw_prime_dmabuf_kunmap,

	.mmap = vmw_prime_dmabuf_mmap,

	.vmap = vmw_prime_dmabuf_vmap,

	.vunmap = vmw_prime_dmabuf_vunmap,

};

int vmw_prime_fd_to_handle(struct drm_device *dev,