Set I/O port resource structs to have IORESOURCE_IO in their type field.
Previously we marked these as merely IORESOURCE_BUSY without indicating the
type.  Setting the type doesn't fix any functional problem but makes %pR
on the resource work better.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
        .name = "pic1",
        .start = PIC_MASTER_CMD,
        .end = PIC_MASTER_IMR,
-       .flags = IORESOURCE_BUSY
+       .flags = IORESOURCE_IO | IORESOURCE_BUSY
 };
 
 static struct resource pic2_io_resource = {
        .name = "pic2",
        .start = PIC_SLAVE_CMD,
        .end = PIC_SLAVE_IMR,
-       .flags = IORESOURCE_BUSY
+       .flags = IORESOURCE_IO | IORESOURCE_BUSY
 };
 
 static int i8259A_irq_domain_map(struct irq_domain *d, unsigned int virq,