ARM: dts: dove: Always include gpio and interrupt-controller headers

We want to enforce the use of named flags in GPIO and interrupt
specifiers, include the corresponding headers to Dove's SoC dtsi.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>