phy: rockchip: Support PCIe v3

RK3568 supports PCIe v3 using not Combphy like PCIe v2 on rk3566.
It use a dedicated PCIe-phy. Add support for this.

Initial support by Shawn Lin, modifications by Peter Geis and Frank
Wunderlich.

Add data-lanes property for splitting pcie-lanes across controllers.

The data-lanes is an array where x=0 means lane is disabled and  x > 0
means controller x is assigned to phy lane.

Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Suggested-by: Peter Geis <pgwipeout@gmail.com>
Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
Link: https://lore.kernel.org/r/20220825193836.54262-4-linux@fw-web.de


Signed-off-by: Vinod Koul <vkoul@kernel.org>