MAINTAINERS: add include/linux/sysfs.h

include/linux/sysfs.h is maintained as part of
"DRIVER CORE, KOBJECT, DEBUGFS AND SYSFS.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Link: https://lore.kernel.org/r/20241205-sysfs-maintainers-v1-1-53694b690d67@weissschuh.net


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