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/tpm.rs

@@ -11,6 +11,7 @@ use anyhow::anyhow;
 use arch::aarch64::layout::{TPM_SIZE, TPM_START};
 #[cfg(target_arch = "x86_64")]
 use arch::x86_64::layout::{TPM_SIZE, TPM_START};
+use log::{debug, error, warn};
 use thiserror::Error;
 use tpm::TPM_CRB_BUFFER_MAX;
 use tpm::emulator::{BackendCmd, Emulator};