dt-bindings: hwlock: Convert stm32 hwspinlock bindings to json-schema

STM32 Hardware Spinlock Device Binding

-------------------------------------

Required properties :

- compatible : should be "st,stm32-hwspinlock".

- reg : the register address of hwspinlock.

- #hwlock-cells : hwlock users only use the hwlock id to represent a specific

	hwlock, so the number of cells should be <1> here.

- clock-names : Must contain "hsem".

- clocks : Must contain a phandle entry for the clock in clock-names, see the

	common clock bindings.

Please look at the generic hwlock binding for usage information for consumers,

"Documentation/devicetree/bindings/hwlock/hwlock.txt"

Example of hwlock provider:

	hwspinlock@4c000000 {

		compatible = "st,stm32-hwspinlock";

		#hwlock-cells = <1>;

		reg = <0x4c000000 0x400>;

		clocks = <&rcc HSEM>;

		clock-names = "hsem";

	};

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

%YAML 1.2

---

$id: http://devicetree.org/schemas/hwlock/st,stm32-hwspinlock.yaml#

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

title: STMicroelectronics STM32 Hardware Spinlock bindings

maintainers:

  - Benjamin Gaignard <benjamin.gaignard@st.com>

  - Fabien Dessenne <fabien.dessenne@st.com>

properties:

  "#hwlock-cells":

    const: 1

  compatible:

    const: st,stm32-hwspinlock

  reg:

    maxItems: 1

  clocks:

    maxItems: 1

  clock-names:

    items:

      - const: hsem

required:

  - "#hwlock-cells"

  - compatible

  - reg

  - clocks

  - clock-names

additionalProperties: false

examples:

  - |

    #include <dt-bindings/clock/stm32mp1-clks.h>

    hwspinlock@4c000000 {

        compatible = "st,stm32-hwspinlock";

        #hwlock-cells = <1>;

        reg = <0x4c000000 0x400>;

        clocks = <&rcc HSEM>;

        clock-names = "hsem";

    };

...