forked from Mirrors/opensbi

Currently 256 bytes is used for the FDT expand size when fixing up reserved memory node. Increase it to 1024 bytes with an estimated size of 64 bytes per PMP memory region by 16 regions in total. Signed-off-by: Bin Meng <bin.meng@windriver.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>