[ALSA] Fix-up sleeping in sound/usb

USB generic driver,USB USX2Y
Description: Fix-up sleeping in sound/usb. Replace big_mdelay() with
msleep() to guarantee the task delays as expected. This also involved
replacing/removing custom sleep functions.

Patch is compile-tested.

Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
diff --git a/sound/usb/usx2y/usX2Yhwdep.c b/sound/usb/usx2y/usX2Yhwdep.c
index bef9b0c..0281a36 100644
--- a/sound/usb/usx2y/usX2Yhwdep.c
+++ b/sound/usb/usx2y/usX2Yhwdep.c
@@ -232,8 +232,7 @@
 	if (err)
 		return err;
 	if (dsp->index == 1) {
-		set_current_state(TASK_UNINTERRUPTIBLE);
-		schedule_timeout(HZ/4);			// give the device some time 
+		msleep(250);				// give the device some time
 		err = usX2Y_AsyncSeq04_init(priv);
 		if (err) {
 			snd_printk("usX2Y_AsyncSeq04_init error \n");