MAINTAINERS: add entries for UniPhier device trees and drivers

This clarifies the location of the files maintained by me.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Olof Johansson <olof@lixom.net>

MAINTAINERS

@@ -1578,7 +1578,10 @@ ARM/UNIPHIER ARCHITECTURE
 M:	Masahiro Yamada <yamada.masahiro@socionext.com>
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 S:	Maintained
+F:	arch/arm/boot/dts/uniphier*
 F:	arch/arm/mach-uniphier/
+F:	drivers/pinctrl/uniphier/
+F:	drivers/tty/serial/8250/8250_uniphier.c
 N:	uniphier
 
 ARM/Ux500 ARM ARCHITECTURE