Docs/mm/damon/maintainer-profile: update for mm-new tree

Recently a new mm tree for new patches, namely mm-new, has been added. 
Update DAMON maintainer's profile doc for DAMON patches life cycle, which
depend on those of mm trees.

Link: https://lkml.kernel.org/r/20250705175000.56259-7-sj@kernel.org


Signed-off-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>