[ALSA] sound: replace remaining __FUNCTION__ occurences

__FUNCTION__ is gcc-specific, use __func__

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/intel8x0.c b/sound/pci/intel8x0.c
index 07782ba..47485af 100644
--- a/sound/pci/intel8x0.c
+++ b/sound/pci/intel8x0.c
@@ -2670,7 +2670,7 @@
 	t = stop_time.tv_sec - start_time.tv_sec;
 	t *= 1000000;
 	t += stop_time.tv_usec - start_time.tv_usec;
-	printk(KERN_INFO "%s: measured %lu usecs\n", __FUNCTION__, t);
+	printk(KERN_INFO "%s: measured %lu usecs\n", __func__, t);
 	if (t == 0) {
 		snd_printk(KERN_ERR "?? calculation error..\n");
 		return;