Correct a copy and paste'o in phys_pager.c, we are talking about phys here

and not about devices.

PR:		93755
Approved by:	imp (mentor, implicit when re-assigning the ticket to me).

sys/vm/phys_pager.c

@@ -42,7 +42,7 @@ __FBSDID("$FreeBSD$");
 #include <vm/vm_page.h>
 #include <vm/vm_pager.h>
 
-/* list of device pager objects */
+/* list of phys pager objects */
 static struct pagerlst phys_pager_object_list;
 /* protect access to phys_pager_object_list */
 static struct mtx phys_pager_mtx;