drm/amdgpu: add fbdev suspend/resume on gpu reset

This can fix the baco reset failure seen on Navi10.
And this should be a low risk fix as the same sequence
is already used for system suspend/resume.

Signed-off-by: Evan Quan <[e-mail]>
Reviewed-by: Alex Deucher <[e-mail]>
Signed-off-by: Alex Deucher <[e-mail]>

drivers/gpu/drm/amd/amdgpu/amdgpu_device.c

···
 				if (r)
 					goto out;
 
+				amdgpu_fbdev_set_suspend(tmp_adev, 0);
+
 				/* must succeed. */
 				amdgpu_ras_resume(tmp_adev);
 
···
 		 * And add them back after reset completed
 		 */
 		amdgpu_unregister_gpu_instance(tmp_adev);
+
+		amdgpu_fbdev_set_suspend(adev, 1);
 
 		/* disable ras on ALL IPs */
 		if (!(in_ras_intr && !use_baco) &&