drm/amdgpu: Use drm_fb_helper_lastclose() and _poll_changed()

This driver can use drm_fb_helper_lastclose() in its .lastclose function.
It can also use drm_fb_helper_output_poll_changed() as its
.output_poll_changed callback.
Remove the unused driver implementations.

Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: "Christian König" <christian.koenig@amd.com>
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 0 insertions, 1 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.h
index 11ae4ab23768..0bcb6c6e0ca9 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.h
@@ -27,6 +27,5 @@ struct drm_framebuffer *
 amdgpu_user_framebuffer_create(struct drm_device *dev,
                                struct drm_file *file_priv,
                                const struct drm_mode_fb_cmd2 *mode_cmd);
-void amdgpu_output_poll_changed(struct drm_device *dev);
 
 #endif