media: mediatek: vcodec: add remove function for decoder platform driver

Need to disable decoder power when remove decoder hardware driver, adding
remove callback function in the definition of platform driver.

Fixes: c05bada35f01 ("media: mtk-vcodec: Add to support multi hardware decode")
Signed-off-by: Yunfei Dong <[e-mail]>
Signed-off-by: Hans Verkuil <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_hw.c

···
 	return ret;
 }
 
+static int mtk_vdec_hw_remove(struct platform_device *pdev)
+{
+	pm_runtime_disable(&pdev->dev);
+
+	return 0;
+}
+
 static struct platform_driver mtk_vdec_driver = {
 	.probe	= mtk_vdec_hw_probe,
+	.remove = mtk_vdec_hw_remove,
 	.driver	= {
 		.name	= "mtk-vdec-comp",
 		.of_match_table = mtk_vdec_hw_match,