gpio: rcar: add R8A7792 support

Renesas  R8A7792 SoC is a member of the R-Car gen2 family, add support for
its GPIO controllers.
Signed-off-by: NSergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

Documentation/devicetree/bindings/gpio/renesas,gpio-rcar.txt

@@ -7,6 +7,7 @@ Required Properties:
     - "renesas,gpio-r8a7779": for R8A7779 (R-Car H1) compatible GPIO controller.
     - "renesas,gpio-r8a7790": for R8A7790 (R-Car H2) compatible GPIO controller.
     - "renesas,gpio-r8a7791": for R8A7791 (R-Car M2-W) compatible GPIO controller.
+    - "renesas,gpio-r8a7792": for R8A7792 (R-Car V2H) compatible GPIO controller.
     - "renesas,gpio-r8a7793": for R8A7793 (R-Car M2-N) compatible GPIO controller.
     - "renesas,gpio-r8a7794": for R8A7794 (R-Car E2) compatible GPIO controller.
     - "renesas,gpio-r8a7795": for R8A7795 (R-Car H3) compatible GPIO controller.

drivers/gpio/gpio-rcar.c

@@ -334,6 +334,9 @@ static const struct of_device_id gpio_rcar_of_table[] = {
 	}, {
 		.compatible = "renesas,gpio-r8a7791",
 		.data = &gpio_rcar_info_gen2,
+	}, {
+		.compatible = "renesas,gpio-r8a7792",
+		.data = &gpio_rcar_info_gen2,
 	}, {
 		.compatible = "renesas,gpio-r8a7793",
 		.data = &gpio_rcar_info_gen2,