[PATCH v3 2/3] media: rcar-isp: Add family compatible for R-Car Gen4 family

["Niklas Söderlund" <niklas.soderlund+renesas@ragnatech.se>]

Add the Gen4 family compatible. This will be used instead of a SoC
specific compatible for the new Gen4 SoC V4M. Two Gen4 boards (V3U and
V4H) have already been added prior and their bindings need to be kept
for backward compatibility.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
* Changes since v2
- Drop comma after sentinel.
- Rewrite comment about compatibility with old DTB files.

* Changes since v1
- Reworked to add a family compatible instead of V4M specific one.
---
 drivers/media/platform/renesas/rcar-isp.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/media/platform/renesas/rcar-isp.c b/drivers/media/platform/renesas/rcar-isp.c
index 4512ac338ca5..acc30bcb13ef 100644
--- a/drivers/media/platform/renesas/rcar-isp.c
+++ b/drivers/media/platform/renesas/rcar-isp.c
@@ -431,7 +431,9 @@ static int risp_probe_resources(struct rcar_isp *isp,
 static const struct of_device_id risp_of_id_table[] = {
 	{ .compatible = "renesas,r8a779a0-isp" },
 	{ .compatible = "renesas,r8a779g0-isp" },
-	{ /* sentinel */ },
+	/* Keep above for compatibility with old DTB files. */
+	{ .compatible = "renesas,rcar-gen4-isp" },
+	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, risp_of_id_table);
 
-- 
2.46.1