Fix import of logging macro.
@@ -5,6 +5,7 @@ use either::Either;
use quote::{ToTokens, Tokens};
use crate::svd::{Cluster, ClusterInfo, Defaults, Peripheral, Register};
use syn::{self, Ident};
+use log::warn;
use crate::errors::*;
use crate::util::{self, ToSanitizedSnakeCase, ToSanitizedUpperCase, BITS_PER_BYTE};
