[PATCH 2/2] Allow nodes at the root to be specified by path as well as by label.

[John Bonesio <bones-s3s/WqlpOiPyB63q8FvJNQ@public.gmane.org>]

Changes to allow us to specify a node by it's path. A path can be used in
place of a label.

This is particularly useful when overriding existing nodes.
This way we don't have to label every possible node in a device tree we know
is a base device tree for a class of systems, and we know the tree will be
modified for the specific systems.

Signed-off-by: John Bonesio <bones-s3s/WqlpOiPyB63q8FvJNQ@public.gmane.org>
---

 dtc-parser.y |   16 ++++++++++++----
 1 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/dtc-parser.y b/dtc-parser.y
index 56d7789..0efd0cc 100644
--- a/dtc-parser.y
+++ b/dtc-parser.y
@@ -134,22 +134,30 @@ devicetree:
 		{
 			struct node *target;
 
-			target = get_node_by_label($1, $2);
+			if ($2[0] == '/')
+				target = get_node_by_path($1, $2);
+			else
+				target = get_node_by_label($1, $2);
+
 			if (target)
 				merge_nodes(target, $3);
 			else
-				print_error("label, '%s' not found", $2);
+				print_error("label or path, '%s', not found", $2);
 			$$ = $1;
 		}
 	| devicetree DT_REMOVENODE DT_REF ';'
 		{
 			struct node *target;
 
-			target = get_node_by_label($1, $3);
+			if ($3[0] == '/')
+				target = get_node_by_path($1, $3);
+			else
+				target = get_node_by_label($1, $3);
+
 			if (target)
 				remove_nodes(target);
 			else
-				print_error("label, '%s' not found", $3);
+				print_error("label or path, '%s', not found", $3);
 		}
 	;