[ALSA] snd_pcm_format_name() is no longer exported

Modules: PCM Midlevel,USB generic driver

Because snd_pcm_format_name() function is used only for informational
purposes, it is no longer exported from the PCM midlevel to reduce
space and dependency. usbaudio module shows only numeric value for format.

Signed-off-by: Jaroslav Kysela <perex@suse.cz>
diff --git a/sound/usb/usbaudio.c b/sound/usb/usbaudio.c
index 53009bb..51a8626 100644
--- a/sound/usb/usbaudio.c
+++ b/sound/usb/usbaudio.c
@@ -2029,7 +2029,7 @@
 		fp = list_entry(p, struct audioformat, list);
 		snd_iprintf(buffer, "  Interface %d\n", fp->iface);
 		snd_iprintf(buffer, "    Altset %d\n", fp->altsetting);
-		snd_iprintf(buffer, "    Format: %s\n", snd_pcm_format_name(fp->format));
+		snd_iprintf(buffer, "    Format: 0x%x\n", fp->format);
 		snd_iprintf(buffer, "    Channels: %d\n", fp->channels);
 		snd_iprintf(buffer, "    Endpoint: %d %s (%s)\n",
 			    fp->endpoint & USB_ENDPOINT_NUMBER_MASK,