MAINTAINERS: mm: add additional include files to listing

Add gfp.h, mmzone.h, memory_hotplug.h & vmalloc.h to the "MEMORY
MANAGMENT" section so scripts/get_maintainer.pl can do a better job of
making recommendations.

Signed-off-by: Cody P Schafer <cody@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/MAINTAINERS b/MAINTAINERS
index cdb8fe8..8bda335 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -5021,6 +5021,10 @@
 W:	http://www.linux-mm.org
 S:	Maintained
 F:	include/linux/mm.h
+F:	include/linux/gfp.h
+F:	include/linux/mmzone.h
+F:	include/linux/memory_hotplug.h
+F:	include/linux/vmalloc.h
 F:	mm/
 
 MEMORY RESOURCE CONTROLLER