dt-bindings: clock: Convert i.MX6SL clock to json-schema

Convert the i.MX6SL clock binding to DT schema format using json-schema.
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Acked-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/clock/imx6sl-clock.txt

-* Clock bindings for Freescale i.MX6 SoloLite
-
-Required properties:
-- compatible: Should be "fsl,imx6sl-ccm"
-- reg: Address and length of the register set
-- #clock-cells: Should be <1>
-
-The clock consumer should specify the desired clock by having the clock
-ID in its "clocks" phandle cell.  See include/dt-bindings/clock/imx6sl-clock.h
-for the full list of i.MX6 SoloLite clock IDs.

Documentation/devicetree/bindings/clock/imx6sl-clock.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/imx6sl-clock.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Clock bindings for Freescale i.MX6 SoloLite
+
+maintainers:
+  - Anson Huang <Anson.Huang@nxp.com>
+
+properties:
+  compatible:
+    const: fsl,imx6sl-ccm
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    description: CCM provides 2 interrupt requests, request 1 is to generate
+      interrupt for frequency or mux change, request 2 is to generate
+      interrupt for oscillator read or PLL lock.
+    items:
+      - description: CCM interrupt request 1
+      - description: CCM interrupt request 2
+    maxItems: 2
+
+  '#clock-cells':
+    const: 1
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - '#clock-cells'
+
+examples:
+  # Clock Control Module node:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    clock-controller@20c4000 {
+        compatible = "fsl,imx6sl-ccm";
+        reg = <0x020c4000 0x4000>;
+        interrupts = <0 87 IRQ_TYPE_LEVEL_HIGH>,
+                     <0 88 IRQ_TYPE_LEVEL_HIGH>;
+        #clock-cells = <1>;
+    };