[PATCH 1/5] libfdt: Export overlay_apply_node() as fdt_overlay_apply_node()

[Marek Vasut]

This function is useful to merge a subset of DT into another DT, for
example if some prior-stage firmware passes a DT fragment to U-Boot
and U-Boot needs to merge it into its own DT. Export this function
to permit implementing such functionality.

Signed-off-by: Marek Vasut <marek.vasut+renesas at gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu at nigauri.org>
Cc: Simon Glass <sjg at chromium.org>
Cc: Tom Rini <trini at konsulko.com>
---
 scripts/dtc/libfdt/fdt_overlay.c | 5 +++++
 scripts/dtc/libfdt/libfdt.h      | 7 +++++++
 2 files changed, 12 insertions(+)

diff --git a/scripts/dtc/libfdt/fdt_overlay.c b/scripts/dtc/libfdt/fdt_overlay.c
index be71873366..c090e6991e 100644
--- a/scripts/dtc/libfdt/fdt_overlay.c
+++ b/scripts/dtc/libfdt/fdt_overlay.c
@@ -879,3 +879,8 @@ err:
 
 	return ret;
 }
+
+int fdt_overlay_apply_node(void *fdt, int target, void *fdto, int node)
+{
+	return overlay_apply_node(fdt, target, fdto, node);
+}
diff --git a/scripts/dtc/libfdt/libfdt.h b/scripts/dtc/libfdt/libfdt.h
index fa63fffe28..421f90ad93 100644
--- a/scripts/dtc/libfdt/libfdt.h
+++ b/scripts/dtc/libfdt/libfdt.h
@@ -2032,6 +2032,13 @@ int fdt_del_node(void *fdt, int nodeoffset);
  */
 int fdt_overlay_apply(void *fdt, void *fdto);
 
+/**
+ * fdt_overlay_apply_node - Merges a node into the base device tree
+ *
+ * See overlay_apply_node() for details.
+ */
+int fdt_overlay_apply_node(void *fdt, int target, void *fdto, int node);
+
 /**********************************************************************/
 /* Debugging / informational functions                                */
 /**********************************************************************/
-- 
2.25.1