dt-bindings: reset: Add Starfive JH7100 reset bindings

Add bindings for the reset controller on the JH7100 RISC-V SoC by
StarFive Ltd. This is a test chip for their upcoming JH7110 SoC.
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>

Documentation/devicetree/bindings/reset/starfive,jh7100-reset.yaml

+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/reset/starfive,jh7100-reset.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: StarFive JH7100 SoC Reset Controller Device Tree Bindings
+
+maintainers:
+  - Emil Renner Berthing <kernel@esmil.dk>
+
+properties:
+  compatible:
+    enum:
+      - starfive,jh7100-reset
+
+  reg:
+    maxItems: 1
+
+  "#reset-cells":
+    const: 1
+
+required:
+  - compatible
+  - reg
+  - "#reset-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    reset-controller@11840000 {
+        compatible = "starfive,jh7100-reset";
+        reg = <0x11840000 0x10000>;
+        #reset-cells = <1>;
+    };
+
+...