dts: riscv: add Telink B91 Entropy driver support

Added Entropy driver DTSI support for Telink B91 platform

Signed-off-by: Yuriy Vynnychek <[email protected]>

Author: Yuriy Vynnychek

dts/bindings/rng/telink,b91-trng.yaml

@@ -0,0 +1,15 @@
+# Copyright (c) 2021, Telink Semiconductor
+# SPDX-License-Identifier: Apache-2.0
+
+description: Telink B91 RNG
+
+compatible: "telink,b91-trng"
+
+include: base.yaml
+
+properties:
+    reg:
+      required: true
+
+    label:
+      required: true

dts/riscv/telink_b91.dtsi

@@ -154,6 +154,13 @@
 			status = "disabled";
 		};
 
+		trng0: trng@80101800 {
+			compatible = "telink,b91-trng";
+			reg = <0x80101800 0x20>;
+			label = "trng_0";
+			status = "disabled";
+		};
+
 		pinmux: pinmux@80140330 {
 			compatible = "telink,b91-pinmux";
 			reg = <0x80140330 0x28