dt-bindings: rtc: Move isil,isl12022 from trivial-rtc.yaml into own schema file

# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause

%YAML 1.2

---

$id: http://devicetree.org/schemas/rtc/intersil,isl12022.yaml#

$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Intersil ISL12022 Real-time Clock

maintainers:

  - Alexandre Belloni <alexandre.belloni@bootlin.com>

properties:

  compatible:

    const: isil,isl12022

  reg:

    maxItems: 1

  interrupts:

    maxItems: 1

required:

  - compatible

  - reg

allOf:

  - $ref: rtc.yaml#

unevaluatedProperties: false

examples:

  - |

    #include <dt-bindings/interrupt-controller/irq.h>

    i2c {

        #address-cells = <1>;

        #size-cells = <0>;

        rtc@6f {

            compatible = "isil,isl12022";

            reg = <0x6f>;

            interrupts-extended = <&gpio1 5 IRQ_TYPE_LEVEL_LOW>;

        };

    };

...

      - isil,isl1208

      # Intersil ISL1218 Low Power RTC with Battery Backed SRAM

      - isil,isl1218

      # Intersil ISL12022 Real-time Clock

      - isil,isl12022

      # Real Time Clock Module with I2C-Bus

      - microcrystal,rv3029

      # Real Time Clock