hw/pci*.h -> include/hw/pci/

Change-Id: I6d5dd4ce57af5df72faf046e4c6335022c12ca7e
diff --git a/hw/piix_pci.c b/hw/piix_pci.c
index 7230914..78bb72f 100644
--- a/hw/piix_pci.c
+++ b/hw/piix_pci.c
@@ -24,7 +24,7 @@
 
 #include "hw/hw.h"
 #include "hw/i386/pc.h"
-#include "pci.h"
+#include "hw/pci/pci.h"
 
 typedef uint32_t pci_addr_t;
 #include "pci_host.h"