ppc: Move Mac machines to hw/ppc/

Signed-off-by: Andreas Färber <afaerber@suse.de>
[agraf: squash in MAINTAINERS fix]
Signed-off-by: Alexander Graf <agraf@suse.de>
diff --git a/hw/mac_nvram.c b/hw/mac_nvram.c
index 71093c2..eec7ca4 100644
--- a/hw/mac_nvram.c
+++ b/hw/mac_nvram.c
@@ -25,7 +25,7 @@
 #include "hw.h"
 #include "firmware_abi.h"
 #include "sysemu/sysemu.h"
-#include "ppc_mac.h"
+#include "ppc/mac.h"
 
 /* debug NVR */
 //#define DEBUG_NVR