dt-bindings: vendor-prefixes: Add prefix for acbel

Add a vendor prefix entry for acbel (https://www.acbel.com

)

Signed-off-by: Lakshmi Yadlapati <lakshmiy@us.ibm.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230413132627.3444119-2-lakshmiy@us.ibm.com


Signed-off-by: Guenter Roeck <linux@roeck-us.net>