arm: vt8500: Update MAINTAINERS entry for arch-vt8500

Sort the VT8500 entries in alphabetical order and add missing entries
for the files.
Signed-off-by: Tony Prisk <linux@prisktech.co.nz>
Signed-off-by: Olof Johansson <olof@lixom.net>

MAINTAINERS

@@ -1248,12 +1248,17 @@ M:	Tony Prisk <linux@prisktech.co.nz>
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 S:	Maintained
 F:	arch/arm/mach-vt8500/
+F:	drivers/clocksource/vt8500_timer.c
+F:	drivers/gpio/gpio-vt8500.c
+F:	drivers/mmc/host/wmt-sdmmc.c
+F:	drivers/pwm/pwm-vt8500.c
+F:	drivers/rtc/rtc-vt8500.c
+F:	drivers/tty/serial/vt8500_serial.c
+F:	drivers/usb/host/ehci-vt8500.c
+F:	drivers/usb/host/uhci-platform.c
 F:	drivers/video/vt8500lcdfb.*
 F:	drivers/video/wm8505fb*
 F:	drivers/video/wmt_ge_rops.*
-F:	drivers/tty/serial/vt8500_serial.c
-F:	drivers/rtc/rtc-vt8500.c
-F:	drivers/mmc/host/wmt-sdmmc.c
 
 ARM/ZIPIT Z2 SUPPORT
 M:	Marek Vasut <marek.vasut@gmail.com>