[U-Boot] [PATCH v2] fdt: Add fdt_del_node_and_alias helper

[Kumar Gala <galak@kernel.crashing.org>]

Add a helper function that given an alias will delete both the node
the alias points to and the alias itself

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
---
* Make alias param const

 common/fdt_support.c  |   13 +++++++++++++
 include/fdt_support.h |    2 ++
 2 files changed, 15 insertions(+), 0 deletions(-)

diff --git a/common/fdt_support.c b/common/fdt_support.c
index f89a3ee..0d0f513 100644
--- a/common/fdt_support.c
+++ b/common/fdt_support.c
@@ -757,3 +757,16 @@ int fdt_fixup_nor_flash_size(void *blob, int cs, u32 size)
 	return -1;
 }
 #endif
+
+void fdt_del_node_and_alias(void *blob, const char *alias)
+{
+	int off = fdt_path_offset(blob, alias);
+
+	if (off < 0)
+		return;
+
+	fdt_del_node(blob, off);
+
+	off = fdt_path_offset(blob, "/aliases");
+	fdt_delprop(blob, off, alias);
+}
diff --git a/include/fdt_support.h b/include/fdt_support.h
index 0a9dd0d..5388c29 100644
--- a/include/fdt_support.h
+++ b/include/fdt_support.h
@@ -81,5 +81,7 @@ int fdt_resize(void *blob);
 
 int fdt_fixup_nor_flash_size(void *blob, int cs, u32 size);
 
+void fdt_del_node_and_alias(void *blob, const char *alias);
+
 #endif /* ifdef CONFIG_OF_LIBFDT */
 #endif /* ifndef __FDT_SUPPORT_H */
-- 
1.6.0.6