pinctrl: bcm2835: Add brcm,bcm2711 compatible

Add a new compatible for the BCM2711.
Signed-off-by: Stefan Wahren <wahrenst@gmx.net>
Link: https://lore.kernel.org/r/1563776607-8368-2-git-send-email-wahrenst@gmx.netSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Documentation/devicetree/bindings/pinctrl/brcm,bcm2835-gpio.txt

@@ -8,6 +8,7 @@ Required properties:
 - compatible: should be one of:
   "brcm,bcm2835-gpio" - BCM2835 compatible pinctrl
   "brcm,bcm7211-gpio" - BCM7211 compatible pinctrl
+  "brcm,bcm2711-gpio" - BCM2711 compatible pinctrl
 - reg: Should contain the physical address of the GPIO module's registers.
 - gpio-controller: Marks the device node as a GPIO controller.
 - #gpio-cells : Should be two. The first cell is the pin number and the