armv8: ls1088a: Add NXP LS1088A SoC support

armv8: ls1088a: Add NXP LS1088A SoC support

LS1088A is compliant with the Layerscape Chassis Generation 3 with
eight ARM v8 Cortex-A53 cores in 2 cluster, CCI-400, one 64-bit DDR4
SDRAM memory controller with ECC, Data path acceleration architecture
2.0 (DPAA2), Ethernet interfaces (SGMIIs, RGMIIs, QSGMIIs, XFIs),
QSPI, IFC, PCIe, SATA, USB, SDXC, DUARTs etc.

Signed-off-by: Alison Wang <[email protected]>
Signed-off-by: Prabhakar Kushwaha <[email protected]>
Signed-off-by: Ashish Kumar <[email protected]>
Signed-off-by: Raghav Dogra <[email protected]>
Signed-off-by: Shaohui Xie <[email protected]>
[YS: Revised commit message]
Reviewed-by: York Sun <[email protected]>