tile: add some tile drivers to MAINTAINERS

Also, alphabetize the existing entries for tile.
Signed-off-by: NChris Metcalf <cmetcalf@tilera.com>

MAINTAINERS

@@ -8288,9 +8288,13 @@ M:	Chris Metcalf <cmetcalf@tilera.com>
 W:	http://www.tilera.com/scm/
 S:	Supported
 F:	arch/tile/
-F:	drivers/tty/hvc/hvc_tile.c
-F:	drivers/net/ethernet/tile/
+F:	drivers/char/tile-srom.c
 F:	drivers/edac/tile_edac.c
+F:	drivers/net/ethernet/tile/
+F:	drivers/rtc/rtc-tile.c
+F:	drivers/tty/hvc/hvc_tile.c
+F:	drivers/usb/host/*-tilegx.c
+F:	include/linux/usb/tilegx.h
 
 TLAN NETWORK DRIVER
 M:	Samuel Chessman <chessman@tux.org>