MAINTAINERS: add missing files to page alloc section

There are a couple of mm/-specific header files that were accidentally
missed previously, and some page ref debug code also that ought to live
here.

Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Lorenzo Stoakes <[email protected]>
Acked-by: Zi Yan <[email protected]>
Acked-by: David Hildenbrand <[email protected]>
Acked-by: Vlastimil Babka <[email protected]>
Cc: Alistair Popple <[email protected]>
Cc: Christoph Lameter (Ampere) <[email protected]>
Cc: Dave Chinner <[email protected]>
Cc: Dennis Zhou <[email protected]>
Cc: Jann Horn <[email protected]>
Cc: Liam Howlett <[email protected]>
Cc: Muchun Song <[email protected]>
Cc: Nico Pache <[email protected]>
Cc: Oscar Salvador <[email protected]>
Cc: Qi Zheng <[email protected]>
Cc: Roman Gushchin <[email protected]>
Cc: Tejun Heo <[email protected]>
Cc: Dev Jain <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Mike Rapoport <[email protected]>
Cc: Pedro Falcato <[email protected]>
Cc: Suren Baghdasaryan <[email protected]>
Cc: Shakeel Butt <[email protected]>
Cc: Joshua Hahn <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

Author: lorenzo-stoakes

MAINTAINERS

@@ -15880,6 +15880,7 @@ F:	include/linux/gfp.h
 F:	include/linux/page-isolation.h
 F:	mm/compaction.c
 F:	mm/debug_page_alloc.c
+F:	mm/debug_page_ref.c
 F:	mm/fail_page_alloc.c
 F:	mm/page_alloc.c
 F:	mm/page_ext.c
@@ -15888,8 +15889,10 @@ F:	mm/page_isolation.c
 F:	mm/page_owner.c
 F:	mm/page_poison.c
 F:	mm/page_reporting.c
+F:	mm/page_reporting.h
 F:	mm/show_mem.c
 F:	mm/shuffle.c
+F:	mm/shuffle.h
 
 MEMORY MANAGEMENT - RECLAIM
 M:	Andrew Morton <[email protected]>