Remove IRTE setup duplicate code with prepare_irte().
Signed-off-by: NSuresh Siddha <suresh.b.siddha@intel.com>
LKML-Reference: <20100827181049.095067319@sbsiddha-MOBL3.sc.intel.com>
Signed-off-by: NH. Peter Anvin <hpa@linux.intel.com>