MAINTAINERS: consistently use my dedicated email address

I use a dedicated address for kernel development.
Unfortunately at some point I used another address and later copied it
around to other places.

Consistently use the dedicated address everywhere.

As the old address does in fact work, an update to mailmap is
not necessary.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Link: https://lore.kernel.org/r/20250331-email-correction-v1-1-4c0e92862202@weissschuh.net


Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>