gpu: host1x: Do not output error message for deferred probe

When deferring probe, avoid logging a confusing error message. While at
it, make the error message more informational.

Reviewed-by: Daniel Vetter <[e-mail]>
Signed-off-by: Thierry Reding <[e-mail]>

drivers/gpu/host1x/dev.c

···
 
 	host->clk = devm_clk_get(&pdev->dev, NULL);
 	if (IS_ERR(host->clk)) {
-		dev_err(&pdev->dev, "failed to get clock\n");
 		err = PTR_ERR(host->clk);
+
+		if (err != -EPROBE_DEFER)
+			dev_err(&pdev->dev, "failed to get clock: %d\n", err);
+
 		return err;
 	}