[PATCH] rust: Prefer std::ptr over core::ptr

[Zhao Liu]

The std::ptr is same as core::ptr, but std has already been used in many
cases and there's no need to choose non-std library.

So, use std::ptr directly to make the used ptr library as consistent as
possible.

Signed-off-by: Zhao Liu <zhao1....@intel.com>
---
 rust/hw/char/pl011/src/device.rs       | 2 +-
 rust/hw/char/pl011/src/device_class.rs | 6 ++++--
 rust/qemu-api/src/irq.rs               | 3 +--
 3 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/rust/hw/char/pl011/src/device.rs b/rust/hw/char/pl011/src/device.rs
index fe73771021e7..59a689fdcd77 100644
--- a/rust/hw/char/pl011/src/device.rs
+++ b/rust/hw/char/pl011/src/device.rs
@@ -2,10 +2,10 @@
 // Author(s): Manos Pitsidianakis <manos.pitsidiana...@linaro.org>
 // SPDX-License-Identifier: GPL-2.0-or-later
 
-use core::ptr::{addr_of, addr_of_mut, NonNull};
 use std::{
     ffi::CStr,
     os::raw::{c_int, c_void},
+    ptr::{addr_of, addr_of_mut, NonNull},
 };
 
 use qemu_api::{
diff --git a/rust/hw/char/pl011/src/device_class.rs 
b/rust/hw/char/pl011/src/device_class.rs
index dbef93f6cb3e..0b2076ddaa0f 100644
--- a/rust/hw/char/pl011/src/device_class.rs
+++ b/rust/hw/char/pl011/src/device_class.rs
@@ -2,8 +2,10 @@
 // Author(s): Manos Pitsidianakis <manos.pitsidiana...@linaro.org>
 // SPDX-License-Identifier: GPL-2.0-or-later
 
-use core::ptr::NonNull;
-use std::os::raw::{c_int, c_void};
+use std::{
+    os::raw::{c_int, c_void},
+    ptr::NonNull,
+};
 
 use qemu_api::{
     bindings::*, c_str, prelude::*, vmstate_clock, vmstate_fields, vmstate_of, 
vmstate_struct,
diff --git a/rust/qemu-api/src/irq.rs b/rust/qemu-api/src/irq.rs
index d1c9dc96eff3..34c19263c233 100644
--- a/rust/qemu-api/src/irq.rs
+++ b/rust/qemu-api/src/irq.rs
@@ -4,8 +4,7 @@
 
 //! Bindings for interrupt sources
 
-use core::ptr;
-use std::{ffi::CStr, marker::PhantomData, os::raw::c_int};
+use std::{ffi::CStr, marker::PhantomData, os::raw::c_int, ptr};
 
 use crate::{
     bindings::{self, qemu_set_irq},
-- 
2.34.1