pci: pcie_dw_rockchip: Configure number of lanes and link width speed

Set number of lanes and link width speed control register based on the
num-lanes property.

Code imported almost 1:1 from dw_pcie_setup in mainline linux.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
1 file changed