misc: tpm: 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

tpm/src/emulator.rs

@@ -9,6 +9,7 @@ use std::{mem, ptr};
 
 use anyhow::anyhow;
 use libc::{c_void, sockaddr_storage, socklen_t};
+use log::{debug, error};
 use thiserror::Error;
 
 use crate::socket::SocketDev;