Add RM mini 3 device code to Broadlink init

[kinsl4yer]

Context

I had a Keemple universal IR remote, which ID was not listed in the init file. After providing the entry as in the pull requests, all works properly.

Proposed change

New product id in the init file

Type of change

• New product id (the device is already supported with a different id)

Additional information

• This PR fixes issue: fixes Add support for new RM4C Mini device ID: 0xa544 #836

Checklist

• The code change is tested and works locally.
• The code has been formatted using Black.
• The code follows the Zen of Python.
• I am creating the Pull Request against the correct branch.
• Documentation added/updated.