test/py: Add support for loading image via tftp to specified location

For example this setting:

env__net_tftp_readable_file = {
    "fn": "ep108/image.ub",
    "addr": 0x10000000,
    "size": 25846296,
    "crc32": "b726f9de",
}

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
1 file changed