dt-bindings: arm: aspeed: add IBM system1-bmc

Document the new compatibles used on IBM system1-bmc
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Ninad Palsule <ninad@linux.ibm.com>
Link: https://lore.kernel.org/r/20240125212154.4028640-2-ninad@linux.ibm.comSigned-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Andrew Jeffery <andrew@codeconstruct.com.au>

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

@@ -86,6 +86,7 @@ properties:
               - facebook,yosemite4-bmc
               - ibm,everest-bmc
               - ibm,rainier-bmc
+              - ibm,system1-bmc
               - ibm,tacoma-bmc
               - inventec,starscream-bmc
               - inventec,transformer-bmc