misc: devices: 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

devices/src/ivshmem.rs

@@ -11,6 +11,7 @@ use std::sync::{Arc, Barrier, Mutex};
 
 use anyhow::anyhow;
 use byteorder::{ByteOrder, LittleEndian};
+use log::{debug, error, warn};
 use pci::{
     BarReprogrammingParams, PCI_CONFIGURATION_ID, PciBarConfiguration, PciBarPrefetchable,
     PciBarRegionType, PciClassCode, PciConfiguration, PciDevice, PciDeviceError, PciHeaderType,