FROMLIST: arm64: dts: rockchip: support the pmu node for rk3399

FROMLIST: arm64: dts: rockchip: support the pmu node for rk3399

This patch add to enable the ARM Performance Monitor Units for rk3399.
ARM cores often have a PMU for counting cpu and cache events like cache
misses and hits.

Also, as the Marc posted the patches [0] to support Partitioning per-cpu
interrupts. Let's add this patch to match it on rk3399 SoCs.

[0]:
https://lkml.org/lkml/2016/4/11/182
https://patchwork.kernel.org/patch/9209369/

Signed-off-by: Caesar Wang <wxt@rock-chips.com>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Marc Zyngier <marc.zyngier@arm.com>
CC: linux-arm-kernel@lists.infradead.org
Acked-by: Mark Rutland <mark.rutland@arm.com>
(Remove the original dts PMU)
Change-Id: I7e06c479bff7a431b0dc03309df08a640060bafd
Signed-off-by: Caesar Wang <wxt@rock-chips.com>
(am https://patchwork.kernel.org/patch/9215663/)