zephyr-build: Fix dt node names

Fix the DT node names in the generated `dt_cfgs` entries to match the
names of the nodes.  Need to apply `fix_id` in a few places to make sure
non-identifier characters are converted to underscores.

Signed-off-by: David Brown <[email protected]>

Author: d3zd3z

zephyr-build/src/devicetree/output.rs

@@ -149,7 +149,7 @@ impl Node {
             writeln!(write, "cargo:rustc-cfg=dt=\"{}\"", child_name)?;
 
             for prop in &child.properties {
-                prop.output_path(write, &child_name)?;
+                prop.output_path(write, &fix_id(&child_name))?;
             }
 
             child.output_path_walk(write, Some(&child_name))?;