PM: Don't use "proxy" headers

Update header inclusions to follow IWYU (Include What You Use)
principle.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/20250626154244.324265-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

Author: andy-shev

include/linux/pm.h

@@ -8,14 +8,15 @@
 #ifndef _LINUX_PM_H
 #define _LINUX_PM_H
 
+#include <linux/completion.h>
 #include <linux/export.h>
-#include <linux/list.h>
-#include <linux/workqueue.h>
+#include <linux/hrtimer_types.h>
+#include <linux/mutex.h>
 #include <linux/spinlock.h>
+#include <linux/types.h>
+#include <linux/util_macros.h>
 #include <linux/wait.h>
-#include <linux/timer.h>
-#include <linux/hrtimer.h>
-#include <linux/completion.h>
+#include <linux/workqueue_types.h>
 
 /*
  * Callbacks for platform drivers to implement.