staging: greybus: audio_codec.c: code indent should use tabs where possible

Minor error spotted by checkpatch.pl in greybus
code indent should use tabs where possible
Signed-off-by: Richard Groux <rgroux@sauron-mordor.net>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/greybus/audio_codec.c

@@ -1008,7 +1008,7 @@ static int gbcodec_probe(struct snd_soc_codec *codec)
 	snd_soc_codec_set_drvdata(codec, info);
 	gbcodec = info;
 
-        device_init_wakeup(codec->dev, 1);
+	device_init_wakeup(codec->dev, 1);
 	return 0;
 }