net/ice: add DDP runtime configuration dump

net/ice: add DDP runtime configuration dump

Dump DDP runtime configure into a binary (package) file from ice PF port.

Add command line:
    ddp dump <port_id> <config_path>

Parameters:
    <port_id>       the PF Port ID
    <config_path>   dumped runtime configure file, if not a absolute path,
                    it will be dumped to testpmd running directory.

For example:
testpmd> ddp dump 0 current.pkg

If you want to dump ice VF DDP runtime configure, you need bind other
unused PF port of the NIC first, and then dump the PF's runtime configure
as target output.

Signed-off-by: Steve Yang <stevex.yang@intel.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>