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>

sound/pci/aw2/aw2-alsa.c

@@ -317,7 +317,7 @@ static int __devinit snd_aw2_create(struct snd_card *card,
 	snd_aw2_saa7146_setup(&chip->saa7146, chip->iobase_virt);
 
 	if (request_irq(pci->irq, snd_aw2_saa7146_interrupt,
-			IRQF_SHARED, "Audiowerk2", chip)) {
+			IRQF_SHARED, KBUILD_MODNAME, chip)) {
 		printk(KERN_ERR "aw2: Cannot grab irq %d\n", pci->irq);
 
 		iounmap(chip->iobase_virt);