tegra: hwpm: os: linux: update kernel vers. check

This is needed when building HWPM driver locally without
NVIDIA build system.

- driver.c: use kernel version check to select the correct
  signature of class:devnode
- mem_mgmt_utils.c:
  - use kernel version check to provide correct parameter
    of MODULE_IMPORT_NS macro
  - use kernel version check to select the correct signature
    of get_user_pages function
- mem_mgmt_utils.h: use kernel version check to select
  between iosys-map or dma-buf-map

Bug 5120925

Change-Id: Ib33afc4d99056d5b872f0d4362e0e6c25eb7b64a
Signed-off-by: Besar Wicaksono <bwicaksono@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-hwpm/+/3306471
GVS: buildbot_gerritrpt <buildbot_gerritrpt@nvidia.com>
Reviewed-by: Yifei Wan <ywan@nvidia.com>
Reviewed-by: Vasuki Shankar <vasukis@nvidia.com>

drivers/tegra/hwpm/os/linux/driver.c

@@ -1,4 +1,4 @@
-/* SPDX-FileCopyrightText: Copyright (c) 2021-2024 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+/* SPDX-FileCopyrightText: Copyright (c) 2021-2025 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
  * SPDX-License-Identifier: GPL-2.0-only
  *
  * This program is free software; you can redistribute it and/or modify it
@@ -21,6 +21,7 @@
 #include <linux/slab.h>
 #include <linux/dma-buf.h>
 #include <linux/debugfs.h>
+#include <linux/version.h>
 
 #include <tegra_hwpm.h>
 #include <tegra_hwpm_ip.h>
@@ -53,7 +54,8 @@ static const struct of_device_id tegra_soc_hwpm_of_match[] = {
 };
 MODULE_DEVICE_TABLE(of, tegra_soc_hwpm_of_match);
 
-#if defined(NV_CLASS_STRUCT_DEVNODE_HAS_CONST_DEV_ARG)
+#if defined(NV_CLASS_STRUCT_DEVNODE_HAS_CONST_DEV_ARG) || \
+	LINUX_VERSION_CODE >= KERNEL_VERSION(6, 2, 0)
 static char *tegra_hwpm_get_devnode(const struct device *dev, umode_t *mode)
 #else
 static char *tegra_hwpm_get_devnode(struct device *dev, umode_t *mode)