dt-bindings: pinctrl: sunxi: Add A100 pinctrl bindings

Add device tree binding Documentation details for A100 pinctrl driver,
which has a r pin controller and a pin controller with more irq lines.
Signed-off-by: Yangtao Li <frank@allwinnertech.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Maxime Ripard <mripard@kernel.org>
Link: https://lore.kernel.org/r/a5773d677bcc89af3810cdd187fae54eced82f27.1595572867.git.frank@allwinnertech.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Documentation/devicetree/bindings/pinctrl/allwinner,sun4i-a10-pinctrl.yaml

@@ -48,6 +48,8 @@ properties:
       - allwinner,sun9i-a80-r-pinctrl
       - allwinner,sun50i-a64-pinctrl
       - allwinner,sun50i-a64-r-pinctrl
+      - allwinner,sun50i-a100-pinctrl
+      - allwinner,sun50i-a100-r-pinctrl
       - allwinner,sun50i-h5-pinctrl
       - allwinner,sun50i-h6-pinctrl
       - allwinner,sun50i-h6-r-pinctrl
@@ -143,6 +145,18 @@ allOf:
   # boards are defining it at the moment so it would generate a lot of
   # warnings.
 
+  - if:
+      properties:
+        compatible:
+          enum:
+            - allwinner,sun50i-a100-pinctrl
+
+    then:
+      properties:
+        interrupts:
+          minItems: 7
+          maxItems: 7
+
   - if:
       properties:
         compatible:
@@ -216,6 +230,7 @@ allOf:
             - allwinner,sun8i-h3-r-pinctrl
             - allwinner,sun8i-r40-pinctrl
             - allwinner,sun50i-a64-r-pinctrl
+            - allwinner,sun50i-a100-r-pinctrl
             - nextthing,gr8-pinctrl
 
     then: