This driver can use drm_fb_helper_output_poll_changed() as its
.output_poll_changed callback.
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: "Christian König" <christian.koenig@amd.com>
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 
 static const struct drm_mode_config_funcs amdgpu_dm_mode_funcs = {
        .fb_create = amdgpu_user_framebuffer_create,
-       .output_poll_changed = amdgpu_output_poll_changed,
+       .output_poll_changed = drm_fb_helper_output_poll_changed,
        .atomic_check = amdgpu_dm_atomic_check,
        .atomic_commit = amdgpu_dm_atomic_commit,
        .atomic_state_alloc = dm_atomic_state_alloc,