Revert "drm/i915/selftests: Convert timers to use timer_setup()"

This reverts commit 6d0dbd30.

timer_setup_on_stack() does not yet exist:

In file included from drivers/gpu/drm/i915/i915_sw_fence.c:517:0:
drivers/gpu/drm/i915/selftests/lib_sw_fence.c: In function ‘timed_fence_init’:
drivers/gpu/drm/i915/selftests/lib_sw_fence.c:63:2: error: implicit declaration of function ‘timer_setup_on_stack’; did you mean ‘hrtimer_init_on_stack’? [-Werror=implicit-function-declaration]
  timer_setup_on_stack(&tf->timer, timed_fence_wake, 0);
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171025131336.2584-1-chris@chris-wilson.co.ukAcked-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

drivers/gpu/drm/i915/selftests/lib_sw_fence.c

@@ -49,9 +49,9 @@ void onstack_fence_fini(struct i915_sw_fence *fence)
 	i915_sw_fence_fini(fence);
 }
 
-static void timed_fence_wake(struct timer_list *t)
+static void timed_fence_wake(unsigned long data)
 {
-	struct timed_fence *tf = from_timer(tf, t, timer);
+	struct timed_fence *tf = (struct timed_fence *)data;
 
 	i915_sw_fence_commit(&tf->fence);
 }
@@ -60,7 +60,7 @@ void timed_fence_init(struct timed_fence *tf, unsigned long expires)
 {
 	onstack_fence_init(&tf->fence);
 
-	timer_setup_on_stack(&tf->timer, timed_fence_wake, 0);
+	setup_timer_on_stack(&tf->timer, timed_fence_wake, (unsigned long)tf);
 
 	if (time_after(expires, jiffies))
 		mod_timer(&tf->timer, expires);