MAINTAINERS: Add file patterns for dove device tree bindings

Submitters of device tree binding documentation may forget to CC
the subsystem maintainer if this is missing.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Cc: Gregory Clement <gregory.clement@free-electrons.com>
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>

MAINTAINERS

@@ -1486,6 +1486,7 @@ M:	Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
 M:	Gregory Clement <gregory.clement@free-electrons.com>
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 S:	Maintained
+F:	Documentation/devicetree/bindings/soc/dove/
 F:	arch/arm/mach-dove/
 F:	arch/arm/mach-mv78xx0/
 F:	arch/arm/mach-orion5x/