drm/omapdrm: Prepare to dynamic dma-buf locking specification

Prepare OMAP DRM driver to the common dynamic dma-buf locking convention
by starting to use the unlocked versions of dma-buf API functions.
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221017172229.42269-8-dmitry.osipenko@collabora.com

drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c

@@ -125,7 +125,7 @@ struct drm_gem_object *omap_gem_prime_import(struct drm_device *dev,
 
 	get_dma_buf(dma_buf);
 
-	sgt = dma_buf_map_attachment(attach, DMA_TO_DEVICE);
+	sgt = dma_buf_map_attachment_unlocked(attach, DMA_TO_DEVICE);
 	if (IS_ERR(sgt)) {
 		ret = PTR_ERR(sgt);
 		goto fail_detach;
@@ -142,7 +142,7 @@ struct drm_gem_object *omap_gem_prime_import(struct drm_device *dev,
 	return obj;
 
 fail_unmap:
-	dma_buf_unmap_attachment(attach, sgt, DMA_TO_DEVICE);
+	dma_buf_unmap_attachment_unlocked(attach, sgt, DMA_TO_DEVICE);
 fail_detach:
 	dma_buf_detach(dma_buf, attach);
 	dma_buf_put(dma_buf);