device/pnp: Add header files for PNP ops

Change-Id: Ifda495420cfb121ad32920bb9f1cbdeef41f6d3a
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/31698
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/mainboard/asus/maximus_iv_gene-z/romstage.c b/src/mainboard/asus/maximus_iv_gene-z/romstage.c
index d32b6f9..f0506fb 100644
--- a/src/mainboard/asus/maximus_iv_gene-z/romstage.c
+++ b/src/mainboard/asus/maximus_iv_gene-z/romstage.c
@@ -14,7 +14,7 @@
  * GNU General Public License for more details.
  */
 
-#include <arch/io.h>
+#include <device/pnp_ops.h>
 #include <device/pci_ops.h>
 #include <device/dram/ddr3.h>
 #include <northbridge/intel/sandybridge/raminit_native.h>