arm64: dts: ls2088a: add pcie support

The physical memory map address and CCSR registers map address are
different between LS2088A and other LS2080A series SoCs.

Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>