armv8/ls2085a: Update common header file

ls2085a_common.h contains hard-coded information for NOR/NAND flash,
I2C, DDR, etc. These are platform specific. Move them out of common
header file and placed into respective board header files.

Move TEXTBASE to 1MB offset to fit NOR flash with up to 1MB sector
size.

Enable command auto complete. Update prompt symbol. Set fdt_high to
0xa0000000 because Linux requires that the fdt  be 8-byte aligned
and below 512 MiB. Besides ensuring compliance with the 512 MiB
limit, this avoids problems with the dtb being misaligned within
the FIT image.

Change the MC FW, MC DPL and Debug server NOR addresses in compliance
with the NOR flash layouts for 128MB flash.

Add PCIe macros. Enable "loadb" command. Disable debug server.
Enable workaround for erratum A008511.
Stop reset on panic for postmortem debugging.

Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Bhupesh Sharma <bhupesh.sharma@freescale.com>
Signed-off-by: Minghuan Lian <Minghuan.Lian@freescale.com>
Signed-off-by: York Sun <yorksun@freescale.com>