doc: fix docbook generation

kernel/timer.c and kernel/hrtimer.c have moved to kernel/time directory. This causes docbook generation to fail. The following commit fixes it by updating the references.

Signed-off-by Pranith Kumar <[email protected]>

---
 Documentation/DocBook/device-drivers.tmpl | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Documentation/DocBook/device-drivers.tmpl +2 -2

index dd3f278..f213058 100644
@@ -54,7 +54,7 @@
 !Ikernel/sched/cpupri.c
 !Ikernel/sched/fair.c
 !Iinclude/linux/completion.h
-!Ekernel/timer.c
+!Ekernel/time/timer.c
      </sect1>
      <sect1><title>Wait queues and Wake events</title>
 !Iinclude/linux/wait.h

@@ -63,7 +63,7 @@
      <sect1><title>High-resolution timers</title>
 !Iinclude/linux/ktime.h
 !Iinclude/linux/hrtimer.h
-!Ekernel/hrtimer.c
+!Ekernel/time/hrtimer.c
      </sect1>
      <sect1><title>Workqueues and Kevents</title>
 !Ekernel/workqueue.c