dt-bindings: rng: Convert BCM2835 to DT schema

Convert BCM2835/6368 Random number generator bindings to DT schema.
Signed-off-by: Nícolas F. R. A. Prado <nfraprado@protonmail.com>
Signed-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/rng/brcm,bcm2835.txt

-BCM2835/6368 Random number generator
-
-Required properties:
-
-- compatible : should be one of
-	"brcm,bcm2835-rng"
-	"brcm,bcm-nsp-rng"
-	"brcm,bcm5301x-rng" or
-	"brcm,bcm6368-rng"
-- reg : Specifies base physical address and size of the registers.
-
-Optional properties:
-
-- clocks : phandle to clock-controller plus clock-specifier pair
-- clock-names : "ipsec" as a clock name
-
-Optional properties:
-
-- interrupts: specify the interrupt for the RNG block
-
-Example:
-
-rng {
-	compatible = "brcm,bcm2835-rng";
-	reg = <0x7e104000 0x10>;
-	interrupts = <2 29>;
-};
-
-rng@18033000 {
-	compatible = "brcm,bcm-nsp-rng";
-	reg = <0x18033000 0x14>;
-};
-
-random: rng@10004180 {
-	compatible = "brcm,bcm6368-rng";
-	reg = <0x10004180 0x14>;
-
-	clocks = <&periph_clk 18>;
-	clock-names = "ipsec";
-};

Documentation/devicetree/bindings/rng/brcm,bcm2835.yaml

+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/rng/brcm,bcm2835.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: BCM2835/6368 Random number generator
+
+maintainers:
+  - Stefan Wahren <stefan.wahren@i2se.com>
+  - Florian Fainelli <f.fainelli@gmail.com>
+  - Herbert Xu <herbert@gondor.apana.org.au>
+
+properties:
+  compatible:
+    enum:
+      - brcm,bcm2835-rng
+      - brcm,bcm-nsp-rng
+      - brcm,bcm5301x-rng
+      - brcm,bcm6368-rng
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    const: ipsec
+
+  interrupts:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+
+examples:
+  - |
+    rng {
+        compatible = "brcm,bcm2835-rng";
+        reg = <0x7e104000 0x10>;
+        interrupts = <2 29>;
+    };
+
+  - |
+    rng@18033000 {
+        compatible = "brcm,bcm-nsp-rng";
+        reg = <0x18033000 0x14>;
+    };
+
+  - |
+    rng@10004180 {
+        compatible = "brcm,bcm6368-rng";
+        reg = <0x10004180 0x14>;
+
+        clocks = <&periph_clk 18>;
+        clock-names = "ipsec";
+    };