tegra: hwpm: rename source files

Shorten source file names by removing "tegra_hwpm" prefix. This will
make understanding the code more legible.

Jira THWPM-58

Change-Id: I39aac11c9f2a763a254b0605f9d96a7b0f372992
Signed-off-by: Vedashree Vidwans <vvidwans@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2729469
Reviewed-by: svc_kernel_abi <svc_kernel_abi@nvidia.com>
Reviewed-by: Vasuki Shankar <vasukis@nvidia.com>
Reviewed-by: Seema Khowala <seemaj@nvidia.com>
GVS: Gerrit_Virtual_Submit

os/linux/debugfs.h

@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) 2021-2022, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ */
+
+#ifndef TEGRA_HWPM_OS_LINUX_DEBUGFS_H
+#define TEGRA_HWPM_OS_LINUX_DEBUGFS_H
+
+struct tegra_soc_hwpm;
+
+#ifdef CONFIG_DEBUG_FS
+void tegra_hwpm_debugfs_init(struct tegra_soc_hwpm *hwpm);
+void tegra_hwpm_debugfs_deinit(struct tegra_soc_hwpm *hwpm);
+#else
+static inline void tegra_hwpm_debugfs_init(struct tegra_soc_hwpm *hwpm) {}
+static inline void tegra_hwpm_debugfs_deinit(struct tegra_soc_hwpm *hwpm) {}
+#endif  /* CONFIG_DEBUG_FS  */
+
+#endif /* TEGRA_HWPM_OS_LINUX_DEBUGFS_H */