powerpc: Set I/O port resource types correctly

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>

arch/powerpc/platforms/maple/time.c

@@ -134,7 +134,7 @@ int maple_set_rtc_time(struct rtc_time *tm)
 
 static struct resource rtc_iores = {
 	.name = "rtc",
-	.flags = IORESOURCE_BUSY,
+	.flags = IORESOURCE_IO | IORESOURCE_BUSY,
 };
 
 unsigned long __init maple_get_boot_time(void)