[ALSA] Fix rounded-up integer division bug

PCM Midlevel
    This patch is against alsa-driver-1.0.8.
    It covers:
        alsa-kernel/core/pcm_lib.c

    It corresponds to bug description:
        <https://bugtrack.alsa-project.org/alsa-bug/view.php?id=951>

    The patch fixes the following problem:

     -- Properly perform rounded-up integer division in
        snd_pcm_system_tick_set() in pcm_lib.c.

        This only had a minor impact.
Signed-off-by: Charles Levert <charles_levert@gna.org>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>

sound/core/pcm_lib.c

@@ -1863,9 +1863,8 @@ static void snd_pcm_system_tick_set(snd_pcm_substream_t *substream,
 	if (ticks == 0)
 		del_timer(&runtime->tick_timer);
 	else {
+		ticks += (1000000 / HZ) - 1;
 		ticks /= (1000000 / HZ);
-		if (ticks % (1000000 / HZ))
-			ticks++;
 		mod_timer(&runtime->tick_timer, jiffies + ticks);
 	}
 }