[SPARC64]: virt_irq --> bucket mapping no longer necessary

We used to need this to compute virt_irq --> ino, but that
is no longer necessary.

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/asm-sparc64/irq.h b/include/asm-sparc64/irq.h
index fd34d73..182dba0 100644
--- a/include/asm-sparc64/irq.h
+++ b/include/asm-sparc64/irq.h
@@ -59,8 +59,7 @@
 extern void sun4u_destroy_msi(unsigned int virt_irq);
 extern unsigned int sbus_build_irq(void *sbus, unsigned int ino);
 
-extern unsigned char virt_irq_alloc(unsigned long real_irq,
-				    unsigned int dev_handle,
+extern unsigned char virt_irq_alloc(unsigned int dev_handle,
 				    unsigned int dev_ino);
 #ifdef CONFIG_PCI_MSI
 extern void virt_irq_free(unsigned int virt_irq);