drm/prime: Remove duplicate forward declaration

struct device is forward-declared twice. Remove the second instance.

Reviewed-by: Chris Wilson <[e-mail]>
Reviewed-by: Christian König <[e-mail]>
Signed-off-by: Thierry Reding <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/[e-mail]

include/drm/drm_prime.h

···
 struct drm_gem_object;
 struct drm_file;
 
-struct device;
-
 /* core prime functions */
 struct dma_buf *drm_gem_dmabuf_export(struct drm_device *dev,
 				      struct dma_buf_export_info *exp_info);