linux-phytec-fsl

ARM: dts: rockchip: add pmu references to cpus nodes

This patch add pmu reference and enable-method for smp

Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Tested-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>