dts: bindings: i2c: add Renesas R-Car I2C

Third generation R-Car series products have up to
seven I2C bus interfaces conformant with the
Philips Semiconductors (now NXP Semiconductors) I2C bus
(Inter-IC bus) specification.

Signed-off-by: Aymeric Aillet <[email protected]>

Author: aaillet

dts/bindings/i2c/renesas,rcar-i2c.yaml

@@ -0,0 +1,16 @@
+# Copyright (c) 2021, IoT.bzh
+# SPDX-License-Identifier: Apache-2.0
+
+description: Renesas R-Car I2C controller
+
+compatible: "renesas,rcar-i2c"
+
+include: i2c-controller.yaml
+
+properties:
+    reg:
+      required: true
+    interrupts:
+      required: true
+    clocks:
+      required: true