MAINTAINERS: vt665?: Replace Forest with Philipp as maintainer

Remove Forest Bond <forest@alittletooquiet.net> as maintainer as this
email address is not reachable anymore. Add me as I want to take care
of the driver and I do have vt6655 and vt6656 hardware to test.

Link: https://lore.kernel.org/linux-staging/d599cd7b-a5d6-4f2d-8744-10254b75f7e5@moroto.mountain/


Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Acked-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://lore.kernel.org/r/20240404202450.GA23408@matrix-ESPRIMO-P710


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>