audio: Fix panic on add_timer [1/1]

PD#TV-7920

Problem:
Audio drive caused kernel panic.
BUG_ON timer_pending.

Solution:
Add timer will panic calling add_timer.
If timer is pending we need use mod_timer
to deal with this case.

Verify:
T962

Change-Id: Ib4143de384af40803609c3513ad07eeb3fe59bbf
Signed-off-by: Shuai Li <shuai.li@amlogic.com>

sound/soc/amlogic/meson/i2s.c

@@ -463,8 +463,7 @@ static void start_timer(struct aml_runtime_data *prtd)
 		hrtimer_start(&prtd->hrtimer, prtd->wakeups_per_second,
 				  HRTIMER_MODE_REL);
 #else
-		prtd->timer.expires = jiffies + 1;
-		add_timer(&prtd->timer);
+		mod_timer(&prtd->timer, jiffies + 1);
 #endif
 #endif
 		prtd->active = 1;