arm64: a37xx: populate pcie memory region

arm64: a37xx: populate pcie memory region

This patch added a new region of 32MiB AT 0xe800.0000
to Armada37x0's memory map. This region is supposed to
be mapped in MMU in order to enable the access to the
PCI I/O or MEM resources.

Signed-off-by: Wilson Ding <[email protected]>
Reviewed-on: http://vgitil04.il.marvell.com:8080/38724
Tested-by: iSoC Platform CI <[email protected]>
Reviewed-by: Victor Gu <[email protected]>
Signed-off-by: Ken Ma <[email protected]>
Cc: Simon Glass <[email protected]>
Cc: Stefan Roese <[email protected]>
Signed-off-by: Stefan Roese <[email protected]>