Rename SN local function move_irq to sn_move_irq to remove conflict
with global move_irq.  Needed since ashok.raj moved move_irq() from
iosapic.c to irq.c.
Signed-off-by: Keith Owens <kaos@sgi.com>
Signed-off-by: David Mosberger <davidm@hpl.hp.com>