misc: pci: drop extern crate, use modern rust

This commit is part of a series of similar commits.

Signed-off-by: Philipp Schuster <philipp.schuster@cyberus-technology.de>
On-behalf-of: SAP philipp.schuster@sap.com

pci/src/vfio.rs

@@ -15,6 +15,7 @@ use anyhow::anyhow;
 use byteorder::{ByteOrder, LittleEndian};
 use hypervisor::HypervisorVmError;
 use libc::{_SC_PAGESIZE, sysconf};
+use log::{error, info};
 use serde::{Deserialize, Serialize};
 use thiserror::Error;
 use vfio_bindings::bindings::vfio::*;