ARM: dts: rockchip: add handles for shared nodes that don't have one yet

Some nodes that are changed in the dtsi hierarchy do not have handles yet.
As it was suggested in the rk3288 submission to do subsequent nodes changes
through such handle-references, add the missing ones.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>

diff --cc arch/arm/boot/dts/rk3066a.dtsi
Simple merge

diff --cc arch/arm/boot/dts/rk3188.dtsi
Simple merge

diff --cc arch/arm/boot/dts/rk3xxx.dtsi
Simple merge