ppc/pnv: activate the "dumpdtb" option on the powernv machine

This is a good way to debug the DT creation for current PowerNV
machines and new ones to come.
Signed-off-by: NCédric Le Goater <clg@kaod.org>
Message-Id: <20190606174732.13051-1-clg@kaod.org>
Reviewed-by: NGreg Kurz <groug@kaod.org>
Signed-off-by: NDavid Gibson <david@gibson.dropbear.id.au>

hw/ppc/pnv.c

@@ -23,6 +23,7 @@
 #include "sysemu/sysemu.h"
 #include "sysemu/numa.h"
 #include "sysemu/cpus.h"
+#include "sysemu/device_tree.h"
 #include "hw/hw.h"
 #include "target/ppc/cpu.h"
 #include "qemu/log.h"
@@ -554,6 +555,7 @@ static void pnv_reset(void)
     /* Pack resulting tree */
     _FDT((fdt_pack(fdt)));
 
+    qemu_fdt_dumpdtb(fdt, fdt_totalsize(fdt));
     cpu_physical_memory_write(PNV_FDT_ADDR, fdt, fdt_totalsize(fdt));
 }