pm: drop unnecessary includes from pm.h

Drop unnecessary includes from include/linux/pm.h .
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

include/linux/pm.h

@@ -22,8 +22,6 @@
 #define _LINUX_PM_H
 
 #include <linux/list.h>
-#include <asm/atomic.h>
-#include <asm/errno.h>
 
 /*
  * Callbacks for platform drivers to implement.