MAINTAINERS: add Pedro as reviewer to the MEMORY MAPPING section

Pedro has offered to review memory mapping code.  He has good experience
in this area and has provided excellent feedback on memory mapping series
in the past so I feel he'll be a great addition.

Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Lorenzo Stoakes <[email protected]>
Acked-by: Vlastimil Babka <[email protected]>
Acked-by: Pedro Falcato <[email protected]>
Acked-by: Liam R. Howlett <[email protected]>
Cc: Jann Horn <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

Author: lorenzo-stoakes

MAINTAINERS

@@ -15558,6 +15558,7 @@ M:	Liam R. Howlett <[email protected]>
 M:	Lorenzo Stoakes <[email protected]>
 R:	Vlastimil Babka <[email protected]>
 R:	Jann Horn <[email protected]>
+R:	Pedro Falcato <[email protected]>
 L:	[email protected]
 S:	Maintained
 W:	http://www.linux-mm.org