armv8: layerscape: Adjust memory mapping for Flash/SD card on LS1043A

This patch is to adjust the memory mapping for FLash/SD card on
LS1043AQDS and LS1043ARDB, such as PPA firmware load address, FMAN
firmware load address, QE firmware load address, U-Boot start address
on serial flash and environment address.

Signed-off-by: Alison Wang <alison.wang@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>