audio: Fixed compiler warning

/* Copyright (c) 2014, The Linux Foundation. All rights reserved.

/* Copyright (c) 2014,2016 The Linux Foundation. All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions are

#include "pm.h"

#include <cutils/log.h>

#include <cutils/str_parms.h>

static s_audio_subsys audio_ss;

    }

}

void audio_extn_pm_event_notifier(void *client_data, enum pm_event event)

void audio_extn_pm_event_notifier(void *client_data __unused, enum pm_event event)

{

    pm_client_event_acknowledge(audio_ss.pm_handle, event);