dt-bindings: rng: Convert stm32 RNG bindings to json-schema

STMicroelectronics STM32 HW RNG

===============================

The STM32 hardware random number generator is a simple fixed purpose IP and

is fully separated from other crypto functions.

Required properties:

- compatible : Should be "st,stm32-rng"

- reg : Should be register base and length as documented in the datasheet

- interrupts : The designated IRQ line for the RNG

- clocks : The clock needed to enable the RNG

Optional properties:

- resets : The reset to properly start RNG

- clock-error-detect : Enable the clock detection management

Example:

	rng: rng@50060800 {

		compatible = "st,stm32-rng";

		reg = <0x50060800 0x400>;

		interrupts = <80>;

		clocks = <&rcc 0 38>;

	};

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

%YAML 1.2

---

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

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

title: STMicroelectronics STM32 RNG bindings

description: |

  The STM32 hardware random number generator is a simple fixed purpose

  IP and is fully separated from other crypto functions.

maintainers:

  - Lionel Debieve <lionel.debieve@st.com>

properties:

  compatible:

    const: st,stm32-rng

  reg:

    maxItems: 1

  clocks:

    maxItems: 1

  resets:

    maxItems: 1

  clock-error-detect:

    description: If set enable the clock detection management

required:

  - compatible

  - reg

  - clocks

additionalProperties: false

examples:

  - |

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

    rng@54003000 {

      compatible = "st,stm32-rng";

      reg = <0x54003000 0x400>;

      clocks = <&rcc RNG1_K>;

    };

...