misc: vmm: 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

vmm/src/pci_segment.rs

@@ -13,6 +13,7 @@ use std::sync::{Arc, Mutex};
 
 use acpi_tables::{Aml, aml};
 use arch::layout;
+use log::info;
 use pci::{DeviceRelocation, PciBdf, PciBus, PciConfigMmio, PciRoot};
 #[cfg(target_arch = "x86_64")]
 use pci::{PCI_CONFIG_IO_PORT, PCI_CONFIG_IO_PORT_SIZE, PciConfigIo};