[ALSA] Fix schedule_timeout usage

Use schedule_timeout_{,un}interruptible() instead of
set_current_state()/schedule_timeout() to reduce kernel size.  Also use
human-time conversion functions instead of hard-coded division to avoid
rounding issues.

Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/intel8x0.c b/sound/pci/intel8x0.c
index 383a3ac..c2f0502 100644
--- a/sound/pci/intel8x0.c
+++ b/sound/pci/intel8x0.c
@@ -2144,8 +2144,7 @@
 }
 
 #define do_delay(chip) do {\
-	set_current_state(TASK_UNINTERRUPTIBLE);\
-	schedule_timeout(1);\
+	schedule_timeout_uninterruptible(1);\
 } while (0)
 
 static int snd_intel8x0_ich_chip_init(intel8x0_t *chip, int probing)