dt-bindings: crypto: Convert i.MX sahara to json-schema

Convert the i.MX sahara binding to DT schema format using json-schema.
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Link: https://lore.kernel.org/r/1596595410-26921-3-git-send-email-Anson.Huang@nxp.comSigned-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/crypto/fsl-imx-sahara.txt

-Freescale SAHARA Cryptographic Accelerator included in some i.MX chips.
-Currently only i.MX27 and i.MX53 are supported.
-
-Required properties:
-- compatible : Should be "fsl,<soc>-sahara"
-- reg : Should contain SAHARA registers location and length
-- interrupts : Should contain SAHARA interrupt number
-
-Example:
-
-sah: crypto@10025000 {
-	compatible = "fsl,imx27-sahara";
-	reg = <	0x10025000 0x800>;
-	interrupts = <75>;
-};

Documentation/devicetree/bindings/crypto/fsl-imx-sahara.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/crypto/fsl-imx-sahara.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale SAHARA Cryptographic Accelerator included in some i.MX chips
+
+maintainers:
+  - Steffen Trumtrar <s.trumtrar@pengutronix.de>
+
+properties:
+  compatible:
+    enum:
+      - fsl,imx27-sahara
+      - fsl,imx53-sahara
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - interrupts
+
+additionalProperties: false
+
+examples:
+  - |
+    crypto@10025000 {
+        compatible = "fsl,imx27-sahara";
+        reg = < 0x10025000 0x800>;
+        interrupts = <75>;
+    };