MAINTAINERS: update RICOH SMARTMEDIA/XD DRIVER file patterns

Entered as 822 (10 key typo?).
Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Maxim Levitsky <maximlevitsky@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

MAINTAINERS

@@ -4821,8 +4821,8 @@ F:	net/rfkill/
 RICOH SMARTMEDIA/XD DRIVER
 M:	Maxim Levitsky <maximlevitsky@gmail.com>
 S:	Maintained
-F:	drivers/mtd/nand/r822.c
-F:	drivers/mtd/nand/r822.h
+F:	drivers/mtd/nand/r852.c
+F:	drivers/mtd/nand/r852.h
 
 RISCOM8 DRIVER
 S:	Orphan