media: mediatek: vcodec: add decoder compatible to support mt8188

1: add mt8188's compatible name: mediatek,mt8188-vcodec-dec.
2: mt8188 is lat single core architecture, using mtk_lat_sig_core_pdata to
initialize private data.
3: Getting mt8188's chip name according to decoder compatible name.

Signed-off-by: Yunfei Dong <[e-mail]>
Reviewed-by: AngeloGioacchino Del Regno <[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.c

···
 		return 8195;
 	else if (of_device_is_compatible(dev->of_node, "mediatek,mt8186-vcodec-dec"))
 		return 8186;
+	else if (of_device_is_compatible(dev->of_node, "mediatek,mt8188-vcodec-dec"))
+		return 8188;
 	else
 		return 8173;
 }

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

···
 		.compatible = "mediatek,mt8195-vcodec-dec",
 		.data = &mtk_lat_sig_core_pdata,
 	},
+	{
+		.compatible = "mediatek,mt8188-vcodec-dec",
+		.data = &mtk_lat_sig_core_pdata,
+	},
 	{},
 };