UPSTREAM: mm/damon/sysfs-schemes: implement scheme region directory

Implement region directories under 'tried_regions' directory of each
scheme DAMON sysfs directory.  This directory will provide the address
range, the monitored access frequency ('nr_accesses'), and the age of each
DAMON region that corresponding DAMON-based operation scheme has tried to
be applied.  Note that this commit doesn't implement the code for filling
the data but only the sysfs directory.

Link: https://lkml.kernel.org/r/20221101220328.95765-4-sj@kernel.org


Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

(cherry picked from commit 9277d036)

Bug: 300502883
Bug: 319753692
Change-Id: I69c9010a8fce2fa61a1d27f2964ac7bc7b85dd44
Signed-off-by: cui yangpei <cuiyangpei@xiaomi.com>