ASoC: dmaengine: Replace strncpy() with strscpy_pad() for pcm->name

While it is safe to use strncpy in this case, the advice is to move to
strscpy or strscpy_pad.
Suggested-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Link: https://lore.kernel.org/r/20190911083331.16801-1-peter.ujfalusi@ti.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/soc-generic-dmaengine-pcm.c

@@ -308,9 +308,9 @@ static int dmaengine_pcm_new(struct snd_soc_pcm_runtime *rtd)
 			pcm->flags |= SND_DMAENGINE_PCM_FLAG_NO_RESIDUE;
 
 		if (rtd->pcm->streams[i].pcm->name[0] == '\0') {
-			strncpy(rtd->pcm->streams[i].pcm->name,
-				rtd->pcm->streams[i].pcm->id,
-				sizeof(rtd->pcm->streams[i].pcm->name));
+			strscpy_pad(rtd->pcm->streams[i].pcm->name,
+				    rtd->pcm->streams[i].pcm->id,
+				    sizeof(rtd->pcm->streams[i].pcm->name));
 		}
 	}