Revert "driver/power: Add debug logs"

This prints an enormous amount of messages to dmesg on every
suspend/resume event, wasting CPU cycles and pushing useful messages out
of the log buffer.

This reverts commit cb25c19c66.

Change-Id: I095d22323c6c48a6b208920f4dad327895c8b0e1

drivers/base/power/main.c

@@ -438,7 +438,7 @@ static pm_callback_t pm_noirq_op(const struct dev_pm_ops *ops, pm_message_t stat
 
 static void pm_dev_dbg(struct device *dev, pm_message_t state, const char *info)
 {
-	dev_info(dev, "%s%s%s\n", info, pm_verb(state.event),
+	dev_dbg(dev, "%s%s%s\n", info, pm_verb(state.event),
 		((state.event & PM_EVENT_SLEEP) && device_may_wakeup(dev)) ?
 		", may wakeup" : "");
 }
@@ -464,7 +464,7 @@ static void dpm_show_time(ktime_t starttime, pm_message_t state, int error,
 	if (usecs == 0)
 		usecs = 1;
 
-	pr_info("%s%s%s of devices %s after %ld.%03ld msecs\n",
+	pm_pr_dbg("%s%s%s of devices %s after %ld.%03ld msecs\n",
 		  info ?: "", info ? " " : "", pm_verb(state.event),
 		  error ? "aborted" : "complete",
 		  usecs / USEC_PER_MSEC, usecs % USEC_PER_MSEC);