ANDROID: mm: add vendor hook for direct reclaim

We'd like to adjust cpu priority for some processes with lower priority
during direct reclaim.

Bug: 351175506
Change-Id: Icdb613e99c8455f705d330aa90f65c908d43a6e3
Signed-off-by: Sooyong Suk <s.suk@samsung.corp-partner.google.com>
(cherry picked from commit 6508004f)
Signed-off-by: Ziwei Dai <ziwei.dai@unisoc.com>