ASoC: SOF: ipc4-pcm: use common helper function in copier prepare

Use the ipc4_set_fmt_mask() helper function instead of open-coding
the logic in multiple places.

Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>

sound/soc/sof/ipc4-topology.c

@@ -1601,21 +1601,9 @@ sof_ipc4_prepare_copier_module(struct snd_sof_widget *swidget,
  out_sample_valid_bits =
  SOF_IPC4_AUDIO_FORMAT_CFG_V_BIT_DEPTH(copier_data->out_format.fmt_cfg);
  snd_mask_none(fmt);
- switch (out_sample_valid_bits) {
- case 16:
- snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE);
- break;
- case 24:
- snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S24_LE);
- break;
- case 32:
- snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S32_LE);
- break;
- default:
- dev_err(sdev->dev, "invalid sample frame format %d\n",
- params_format(pipeline_params));
- return -EINVAL;
- }
+ ret = ipc4_set_fmt_mask(fmt, out_sample_valid_bits);
+ if (ret)
+ return ret;
 
  /*
  * Set the gateway dma_buffer_size to 2ms buffer size to meet the FW expectation. In the