drm/msm/dsi: print error code when MIPI DSI host registration fails

In order to ease debugging of DSI host registration issues, print return
code of dsi_mgr_setup_components().

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Abhinav Kumar <abhinavk@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>

drivers/gpu/drm/msm/dsi/dsi_manager.c

@@ -817,8 +817,8 @@ int msm_dsi_manager_register(struct msm_dsi *msm_dsi)
 
 	ret = dsi_mgr_setup_components(id);
 	if (ret) {
-		pr_err("%s: failed to register mipi dsi host for DSI %d\n",
-			__func__, id);
+		pr_err("%s: failed to register mipi dsi host for DSI %d: %d\n",
+			__func__, id, ret);
 		goto fail;
 	}