mfd: Convert db8500-prcmu panic() into pr_crit()

panic() is too heavy for this, indeed the PRCMU is critical for
the system but not to the point that we should stop everything,
if we can still get a prompt or so.

Signed-off-by: Linus Walleij <[e-mail]>
Signed-off-by: Samuel Ortiz <[e-mail]>

drivers/mfd/db8500-prcmu.c

···
 
 	if (!wait_for_completion_timeout(&mb0_transfer.ac_wake_work,
 			msecs_to_jiffies(5000))) {
-		panic("prcmu: %s timed out (5 s) waiting for a reply.\n",
+		pr_crit("prcmu: %s timed out (5 s) waiting for a reply.\n",
 			__func__);
 		goto unlock_and_return;
 	}
···
 		if (wait_for_completion_timeout(&mb0_transfer.ac_wake_work,
 				msecs_to_jiffies(5000)))
 			goto retry;
-		panic("prcmu: %s timed out (5 s) waiting for AC_SLEEP_ACK.\n",
+		pr_crit("prcmu: %s timed out (5 s) waiting for AC_SLEEP_ACK.\n",
 			__func__);
 	}
 
···
 
 	if (!wait_for_completion_timeout(&mb0_transfer.ac_wake_work,
 			msecs_to_jiffies(5000))) {
-		panic("prcmu: %s timed out (5 s) waiting for a reply.\n",
+		pr_crit("prcmu: %s timed out (5 s) waiting for a reply.\n",
 			__func__);
 	}