arvm8: pcie-layerscape: Define stream-ids for Layerscape Chassis-2

arvm8: pcie-layerscape: Define stream-ids for Layerscape Chassis-2

Layerscape Chassis-2 have PCIe device, some platform devices and
DPAA1 devices which will use stream-ids for iommu level isolation
as they are behind SMMU.

This patch defines the stream-ids for Chassis-2 devices. DPAA1 is
reserved for future use.

Signed-off-by: Bharat Bhushan <Bharat.Bhushan@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>