[SPARC] minor irq handler cleanups

- mark timer_interrupt() static

- sparc_floppy_request_irq() prototype should use irq_handler_t

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Acked-by: David S. Miller <davem@davemloft.net>
diff --git a/include/asm-sparc/floppy.h b/include/asm-sparc/floppy.h
index dbe7a58..d3978e0 100644
--- a/include/asm-sparc/floppy.h
+++ b/include/asm-sparc/floppy.h
@@ -280,7 +280,7 @@
 
 /* Our low-level entry point in arch/sparc/kernel/entry.S */
 extern int sparc_floppy_request_irq(int irq, unsigned long flags,
-				    irqreturn_t (*irq_handler)(int irq, void *));
+				    irq_handler_t irq_handler);
 
 static int sun_fd_request_irq(void)
 {