pseries: Add trace event for PCI irqs This adds a trace event in the pseries PCI specific set_irq() function to assist in debugging. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: David Gibson <david@gibson.dropbear.id.au> [agraf: add trace.h include] Signed-off-by: Alexander Graf <agraf@suse.de>