pci: update all users to look in pci/

update all users so we can remove the makefile hack.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
diff --git a/arch_init.c b/arch_init.c
index e6effe8..e307b23 100644
--- a/arch_init.c
+++ b/arch_init.c
@@ -36,7 +36,7 @@
 #include "arch_init.h"
 #include "audio/audio.h"
 #include "hw/pc.h"
-#include "hw/pci.h"
+#include "hw/pci/pci.h"
 #include "hw/audiodev.h"
 #include "kvm.h"
 #include "migration.h"