RK3399-Q7 is a Qseven compatible system-on-module by Theobroma Systems.

This adds the module and the EVK baseboard "Haikou"
Signed-off-by: Klaus Goger <klaus.goger@theobroma-systems.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>