dt-bindings: reset: npcm: Add support for NPCM8XX

Add binding document and device tree binding constants for Nuvoton BMC
NPCM8XX reset controller.
Signed-off-by: Tomer Maimon <tmaimon77@gmail.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Documentation/devicetree/bindings/reset/nuvoton,npcm750-reset.yaml

@@ -11,7 +11,9 @@ maintainers:
 
 properties:
   compatible:
-    const: nuvoton,npcm750-reset
+    enum:
+      - nuvoton,npcm750-reset        # Poleg NPCM7XX SoC
+      - nuvoton,npcm845-reset        # Arbel NPCM8XX SoC
 
   reg:
     maxItems: 1