Restrict the memory range available for image processing in the
"bootm" to 256 MiB so the kernel can access it and FDT or initrd are
not overwritten on ARM64.
Signed-off-by: Grygorii Tertychnyi <grygorii.tertychnyi@leica-geosystems.com>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Marek Vasut <marex@denx.de>
Cc: Andrey Zhizhikin <andrey.zhizhikin@leica-geosystems.com>
Reviewed-by: Tom Rini <trini@konsulko.com>