dt-bindings: phy: samsung,exynos-hdmi-phy: convert to dtschema

Convert the Exynos HDMI PHY bindings to DT schema format and put them
next to other PHYs.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220208171823.226211-4-krzysztof.kozlowski@canonical.com

Documentation/devicetree/bindings/display/exynos/exynos_hdmiphy.txt

-Device-Tree bindings for hdmiphy driver
-
-Required properties:
-- compatible: value should be one of the following:
-	1) "samsung,exynos5-hdmiphy" <DEPRECATED>
-	2) "samsung,exynos4210-hdmiphy".
-	3) "samsung,exynos4212-hdmiphy".
-- reg: I2C address of the hdmiphy device.
-
-Example:
-
-	hdmiphy {
-		compatible = "samsung,exynos4210-hdmiphy";
-		reg = <0x38>;
-	};

Documentation/devicetree/bindings/phy/samsung,exynos-hdmi-phy.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/phy/samsung,exynos-hdmi-phy.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Samsung Exynos SoC HDMI PHY
+
+maintainers:
+  - Inki Dae <inki.dae@samsung.com>
+  - Joonyoung Shim <jy0922.shim@samsung.com>
+  - Seung-Woo Kim <sw0312.kim@samsung.com>
+  - Kyungmin Park <kyungmin.park@samsung.com>
+  - Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
+
+properties:
+  compatible:
+    oneOf:
+      - enum:
+          - samsung,exynos4210-hdmiphy
+          - samsung,exynos4212-hdmiphy
+      - const: samsung,exynos5-hdmiphy
+        deprecated: true
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        hdmi-phy@38 {
+            compatible = "samsung,exynos4210-hdmiphy";
+            reg = <0x38>;
+        };
+    };