Allow lmkd read access to /proc/meminfo for retrieving information
on memory state.

Bug: 75322373
Change-Id: I7cf685813a5a49893c8f9a6ac4b5f6619f3c18aa
Merged-In: I7cf685813a5a49893c8f9a6ac4b5f6619f3c18aa
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
(cherry picked from commit 76384b3e)