ALSA: use KBUILD_MODNAME for request_irq argument in sound/pci/*

The name argument of request_irq() appears in /proc/interrupts, and
it's quite ugly when the name entry contains a space or special letters.
In general, it's simpler and more readable when the module name appears
there, so let's replace all entries with KBUILD_MODNAME.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/nm256/nm256.c b/sound/pci/nm256/nm256.c
index fd19b7f..83ea7a7 100644
--- a/sound/pci/nm256/nm256.c
+++ b/sound/pci/nm256/nm256.c
@@ -465,7 +465,7 @@
 	mutex_lock(&chip->irq_mutex);
 	if (chip->irq < 0) {
 		if (request_irq(chip->pci->irq, chip->interrupt, IRQF_SHARED,
-				chip->card->driver, chip)) {
+				KBUILD_MODNAME, chip)) {
 			snd_printk(KERN_ERR "unable to grab IRQ %d\n", chip->pci->irq);
 			mutex_unlock(&chip->irq_mutex);
 			return -EBUSY;