Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index fe5c803..1a07750 100644
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -460,7 +460,7 @@
 				   PM_QOS_CPU_DMA_LATENCY, usecs);
 	return 0;
  _error:
-	/* hardware might be unuseable from this time,
+	/* hardware might be unusable from this time,
 	   so we force application to retry to set
 	   the correct hardware parameter settings */
 	runtime->status->state = SNDRV_PCM_STATE_OPEN;