[PATCH] alpha pt_regs cleanups: handle_irq()

isa_no_iack_sc_device_interrupt() always gets get_irq_regs() as
argument; kill that argument.

All but two callers of handle_irq() pass get_irq_regs() as argument;
convert the remaining two, kill set_irq_regs() inside handle_irq().

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/alpha/kernel/sys_wildfire.c

@@ -246,7 +246,7 @@ wildfire_device_interrupt(unsigned long vector)
 	 * bits 5-0:	irq in PCA
 	 */
 
-	handle_irq(irq, get_irq_regs());
+	handle_irq(irq);
 	return;
 }