dt-bindings: arm: aspeed: document ASRock SPC621D8HM3

Document ASRock SPC621D8HM3 board compatible.
Signed-off-by: Zev Weiss <zev@bewilderbeest.net>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20231120121954.19926-5-zev@bewilderbeest.netSigned-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Andrew Jeffery <andrew@codeconstruct.com.au>

Documentation/devicetree/bindings/arm/aspeed/aspeed.yaml

@@ -36,6 +36,7 @@ properties:
               - aspeed,ast2500-evb
               - asrock,e3c246d4i-bmc
               - asrock,romed8hm3-bmc
+              - asrock,spc621d8hm3-bmc
               - bytedance,g220a-bmc
               - facebook,cmm-bmc
               - facebook,minipack-bmc