R-Car V3H (R8A77980) SoC also has the R-Car gen3 compatible I2C controller,
so document the SoC  specific bindings.

Signed-off-by: Sergei Shtylyov <sergei.shtyl...@cogentembedded.com>

---
The patch is against Wolfram Sang's 'linux.git' repo's 'i2c/for-next' branch
but I wouldn't mind if it was applied to the 'i2c/for-current' branch. :-)

 Documentation/devicetree/bindings/i2c/i2c-rcar.txt |    1 +
 1 file changed, 1 insertion(+)

Index: linux/Documentation/devicetree/bindings/i2c/i2c-rcar.txt
===================================================================
--- linux.orig/Documentation/devicetree/bindings/i2c/i2c-rcar.txt
+++ linux/Documentation/devicetree/bindings/i2c/i2c-rcar.txt
@@ -15,6 +15,7 @@ Required properties:
        "renesas,i2c-r8a7796" if the device is a part of a R8A7796 SoC.
        "renesas,i2c-r8a77965" if the device is a part of a R8A77965 SoC.
        "renesas,i2c-r8a77970" if the device is a part of a R8A77970 SoC.
+       "renesas,i2c-r8a77980" if the device is a part of a R8A77980 SoC.
        "renesas,i2c-r8a77995" if the device is a part of a R8A77995 SoC.
        "renesas,rcar-gen1-i2c" for a generic R-Car Gen1 compatible device.
        "renesas,rcar-gen2-i2c" for a generic R-Car Gen2 or RZ/G1 compatible

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