Maintainers of rtems-littlevgl package

[Gedare Bloom]

Hi everyone,

I'm pleased to announce that the rtems-littlevgl package will be
maintained (officially) by Christian Mauderer and Vijay Kumar
Bannerjee. Christian/Vijay, please add a README file to the
rtems-littlevgl package and include some details about the role of
that repo in RTEMS, and with your information as the package
maintainers. Eventually there should also be some instructions on how
to use it in the README :)

Thanks,
Gedare