[ALSA] Remove vmalloc wrapper, kfree_nocheck()

- Remove vmalloc wrapper
- Add release_and_free_resource() to remove kfree_nocheck() from each driver
  and simplify the code

Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/drivers/vx/vx_pcm.c b/sound/drivers/vx/vx_pcm.c
index c2312d9..2b46758 100644
--- a/sound/drivers/vx/vx_pcm.c
+++ b/sound/drivers/vx/vx_pcm.c
@@ -79,7 +79,7 @@
 		/* already allocated */
 		if (runtime->dma_bytes >= size)
 			return 0; /* already enough large */
-		vfree_nocheck(runtime->dma_area); /* bypass the memory wrapper */
+		vfree(runtime->dma_area);
 	}
 	runtime->dma_area = vmalloc_32(size);
 	if (! runtime->dma_area)
@@ -98,7 +98,7 @@
 {
 	snd_pcm_runtime_t *runtime = subs->runtime;
 	if (runtime->dma_area) {
-		vfree_nocheck(runtime->dma_area); /* bypass the memory wrapper */
+		vfree(runtime->dma_area);
 		runtime->dma_area = NULL;
 	}
 	return 0;