dtc: import latest upstream dtc

This updates scripts/dtc to commit 317a5d9 "dtc: zero out new label
objects" from git://git.jdl.com/software/dtc.git.

This adds features such as:
* /bits/ syntax for cell data.
* Math expressions within cell data.
* The ability to delete properties or nodes.
* Support for #line directives in the input file, which allows the use of
  cpp on *.dts.
* -i command-line option (/include/ path)
* -W/-E command-line options for error/warning control.
* Removal of spew to STDOUT containing the filename being compiled.
* Many additions to the libfdt API.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Jon Loeliger <jdl@jdl.com>
Signed-off-by: Rob Herring <rob.herring@calxeda.com>

1 files changed, 7 insertions, 34 deletions

diff --git a/scripts/dtc/libfdt/fdt_wip.c b/scripts/dtc/libfdt/fdt_wip.c
index a4652c6e787e..6025fa1fe8fe 100644
--- a/scripts/dtc/libfdt/fdt_wip.c
+++ b/scripts/dtc/libfdt/fdt_wip.c
@@ -94,41 +94,14 @@ int fdt_nop_property(void *fdt, int nodeoffset, const char *name)
         return 0;
 }
 
-int _fdt_node_end_offset(void *fdt, int nodeoffset)
+int _fdt_node_end_offset(void *fdt, int offset)
 {
-        int level = 0;
-        uint32_t tag;
-        int offset, nextoffset;
-
-        tag = fdt_next_tag(fdt, nodeoffset, &nextoffset);
-        if (tag != FDT_BEGIN_NODE)
-                return -FDT_ERR_BADOFFSET;
-        do {
-                offset = nextoffset;
-                tag = fdt_next_tag(fdt, offset, &nextoffset);
-
-                switch (tag) {
-                case FDT_END:
-                        return offset;
-
-                case FDT_BEGIN_NODE:
-                        level++;
-                        break;
-
-                case FDT_END_NODE:
-                        level--;
-                        break;
-
-                case FDT_PROP:
-                case FDT_NOP:
-                        break;
-
-                default:
-                        return -FDT_ERR_BADSTRUCTURE;
-                }
-        } while (level >= 0);
-
-        return nextoffset;
+        int depth = 0;
+
+        while ((offset >= 0) && (depth >= 0))
+                offset = fdt_next_node(fdt, offset, &depth);
+
+        return offset;
 }
 
 int fdt_nop_node(void *fdt, int nodeoffset)