dt-bindings: ata: Add Cirrus EP93xx

Add YAML bindings for ep93xx SoC PATA.
Signed-off-by: Nikita Shubin <nikita.shubin@maquefel.me>
Tested-by: Alexander Sverdlin <alexander.sverdlin@gmail.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Acked-by: Damien Le Moal <dlemoal@kernel.org>
Acked-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Documentation/devicetree/bindings/ata/cirrus,ep9312-pata.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/ata/cirrus,ep9312-pata.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Cirrus Logic EP9312 PATA controller
+
+maintainers:
+  - Damien Le Moal <dlemoal@kernel.org>
+
+properties:
+  compatible:
+    oneOf:
+      - const: cirrus,ep9312-pata
+      - items:
+          - const: cirrus,ep9315-pata
+          - const: cirrus,ep9312-pata
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - interrupts
+
+additionalProperties: false
+
+examples:
+  - |
+    ide@800a0000 {
+        compatible = "cirrus,ep9312-pata";
+        reg = <0x800a0000 0x38>;
+        interrupt-parent = <&vic1>;
+        interrupts = <8>;
+        pinctrl-names = "default";
+        pinctrl-0 = <&ide_default_pins>;
+    };