dt-bindings: iio: chemical: sps30: convert bindings to yaml

* Sensirion SPS30 particulate matter sensor

Required properties:

- compatible: must be "sensirion,sps30"

- reg: the I2C address of the sensor

Example:

sps30@69 {

	compatible = "sensirion,sps30";

	reg = <0x69>;

};

# SPDX-License-Identifier: GPL-2.0

%YAML 1.2

---

$id: http://devicetree.org/schemas/iio/chemical/sensirion,sps30.yaml#

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

title: Sensirion SPS30 particulate matter sensor

maintainers:

  - Tomasz Duszynski <tduszyns@gmail.com>

description: |

  Air pollution sensor capable of measuring mass concentration of dust

  particles.

properties:

  compatible:

    enum:

      - sensirion,sps30

  reg:

    maxItems: 1

required:

  - compatible

  - reg

examples:

  - |

    i2c {

      #address-cells = <1>;

      #size-cells = <0>;

      air-pollution-sensor@69 {

        compatible = "sensirion,sps30";

        reg = <0x69>;

      };

    };

...