device tree: add nop_node

We have a qemu internal abstraction layer on FDT. While I'm not fully convinced
we need it at all, it's missing the nop_node functionality that we now need
on e500. So let's add it and think about the general future of that API later.

Signed-off-by: Alexander Graf <agraf@suse.de>

1 files changed, 11 insertions, 0 deletions

diff --git a/device_tree.c b/device_tree.c
index 3a224d1e0f..23e89e3b90 100644
--- a/device_tree.c
+++ b/device_tree.c
@@ -107,3 +107,14 @@ int qemu_devtree_setprop_string(void *fdt, const char *node_path,
 
     return fdt_setprop_string(fdt, offset, property, string);
 }
+
+int qemu_devtree_nop_node(void *fdt, const char *node_path)
+{
+    int offset;
+
+    offset = fdt_path_offset(fdt, node_path);
+    if (offset < 0)
+        return offset;
+
+    return fdt_nop_node(fdt, offset);
+}