ASoC: mediatek: Fix unbalanced calls to runtime suspend/resume

This adds call to runtime suspend in dev remove. It fixs the problem that
suspend is not called in the case of CONFIG_PM=n. It also fixs build
warning when CONFIG_PM=n.

Signed-off-by: Koro Chen <koro.chen@mediatek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/mediatek/mtk-afe-pcm.c

@@ -1199,6 +1199,8 @@ err_pm_disable:
 static int mtk_afe_pcm_dev_remove(struct platform_device *pdev)
 {
 	pm_runtime_disable(&pdev->dev);
+	if (!pm_runtime_status_suspended(&pdev->dev))
+		mtk_afe_runtime_suspend(&pdev->dev);
 	snd_soc_unregister_component(&pdev->dev);
 	snd_soc_unregister_platform(&pdev->dev);
 	return 0;