[Committed] MAINTAINERS: Add myself for write after approval

[Marcel Vollweiler]

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Mentor Graphics (Deutschland) GmbH, Arnulfstrasse 201, 80634 München 
Registergericht München HRB 106955, Geschäftsführer: Thomas Heurung, Frank 
Thürauf

commit 8982a5354d2697eeb12a77d49b6730db90053618
Author: Marcel Vollweiler <mar...@codesourcery.com>
Date:   Wed May 12 10:14:41 2021 -0700

    MAINTAINERS: Add myself for write after approval
    
    ChangeLog:
    
    2021-05-12  Marcel Vollweiler  <mar...@codesourcery.com>
    
        * MAINTAINERS (Write After Approval): Add myself.