dt-bindings: memory: convert TI a8xx DDR2/mDDR memory controller to dtschema

Convert Texas Instruments da8xx DDR2/mDDR memory controller bindings to
DT schema format using json-schema.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20210818113248.85084-1-krzysztof.kozlowski@canonical.comSigned-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/memory-controllers/ti,da8xx-ddrctl.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/memory-controllers/ti,da8xx-ddrctl.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Texas Instruments da8xx DDR2/mDDR memory controller
+
+maintainers:
+  - Bartosz Golaszewski <bgolaszewski@baylibre.com>
+  - Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
+
+description: |
+  Documentation:
+    OMAP-L138 (DA850) - http://www.ti.com/lit/ug/spruh82c/spruh82c.pdf
+
+properties:
+  compatible:
+    const: ti,da850-ddr-controller
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    memory-controller@b0000000 {
+        compatible = "ti,da850-ddr-controller";
+        reg = <0xb0000000 0xe8>;
+    };

Documentation/devicetree/bindings/memory-controllers/ti-da8xx-ddrctl.txt

-* Device tree bindings for Texas Instruments da8xx DDR2/mDDR memory controller
-
-The DDR2/mDDR memory controller present on Texas Instruments da8xx SoCs features
-a set of registers which allow to tweak the controller's behavior.
-
-Documentation:
-OMAP-L138 (DA850) - http://www.ti.com/lit/ug/spruh82c/spruh82c.pdf
-
-Required properties:
-
-- compatible:		"ti,da850-ddr-controller" - for da850 SoC based boards
-- reg:			a tuple containing the base address of the memory
-			controller and the size of the memory area to map
-
-Example for da850 shown below.
-
-ddrctl {
-	compatible = "ti,da850-ddr-controller";
-	reg = <0xb0000000 0xe8>;
-};