usertools: fix active interface detection when binding

usertools: fix active interface detection when binding

When adding crypto devices, the "Active" and "Ssh_if" attributes of
existing network devices were reset. This causes the following issues:

- Network interfaces aren't marked as "*Active*" in the --status output.
- Active network interfaces can be unbound without the --force option,
  causing loss of network connection.

The reset was caused by the call to devices[d].update in
get_crypto_details.

This patch prevents the update on non-crypto devices.

Fixes: cb4a1d14bf3e ("tools: bind crypto devices")
Cc: stable@dpdk.org
Signed-off-by: Yoni Gilad <yonig@radcom.com>
Acked-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>