misc: Further improve imports styling

By introducing `imports_granularity="Module"` format strategy,
effectively groups imports from the same module into one line or block,
improving maintainability and readability.

Signed-off-by: Ruoqing He <heruoqing@iscas.ac.cn>

arch/src/x86_64/mod.rs

@@ -27,9 +27,7 @@ use vm_memory::{
     GuestMemoryRegion, GuestUsize,
 };
 
-use crate::GuestMemoryMmap;
-use crate::InitramfsConfig;
-use crate::RegionType;
+use crate::{GuestMemoryMmap, InitramfsConfig, RegionType};
 mod smbios;
 use std::arch::x86_64;
 #[cfg(feature = "tdx")]

arch/src/x86_64/mptable.rs

@@ -5,9 +5,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE-BSD-3-Clause file.
 
-use std::mem;
-use std::result;
-use std::slice;
+use std::{mem, result, slice};
 
 use libc::c_uchar;
 use thiserror::Error;
@@ -306,9 +304,8 @@ pub fn setup_mptable(
 
 #[cfg(test)]
 mod tests {
-    use vm_memory::{
-        bitmap::BitmapSlice, GuestUsize, VolatileMemoryError, VolatileSlice, WriteVolatile,
-    };
+    use vm_memory::bitmap::BitmapSlice;
+    use vm_memory::{GuestUsize, VolatileMemoryError, VolatileSlice, WriteVolatile};
 
     use super::*;
     use crate::layout::MPTABLE_START;

arch/src/x86_64/smbios.rs

@@ -6,14 +6,11 @@
 //
 // SPDX-License-Identifier: Apache-2.0 AND BSD-3-Clause
 
-use std::mem;
-use std::result;
-use std::slice;
+use std::{mem, result, slice};
 
 use thiserror::Error;
 use uuid::Uuid;
-use vm_memory::ByteValued;
-use vm_memory::{Address, Bytes, GuestAddress};
+use vm_memory::{Address, ByteValued, Bytes, GuestAddress};
 
 use crate::layout::SMBIOS_START;
 use crate::GuestMemoryMmap;