drm/amdgpu: use dev_dbg to print messages in runtime cycle

Runtime PM can happen pretty frequently, as these printings
may be annoyed, switch to dev_dbg.

Suggested-by: Lijo Lazar <[e-mail]>
Signed-off-by: Guchun Chen <[e-mail]>
Reviewed-by: Alex Deucher <[e-mail]>
Signed-off-by: Alex Deucher <[e-mail]>

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

···
 		amdgpu_device_baco_enter(drm_dev);
 	}
 
-	dev_info(&pdev->dev, "asic/device is runtime suspended\n");
+	dev_dbg(&pdev->dev, "asic/device is runtime suspended\n");
 
 	return 0;
 }

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

···
 	struct psp_gfx_cmd_resp *cmd = acquire_psp_cmd_buf(psp);
 
 	psp_prep_tmr_unload_cmd_buf(psp, cmd);
-	dev_info(psp->adev->dev, "free PSP TMR buffer\n");
+	dev_dbg(psp->adev->dev, "free PSP TMR buffer\n");
 
 	ret = psp_cmd_submit_buf(psp, NULL, cmd,
 				 psp->fence_buf_mc_addr);