zephyr-build: fix DTS parser for Windows

The zephyr-build DTS parser fails on Windows, due to the "\r\n" whitespace
used on that platform. Accept the "\r" in addition to the "\n" to allow it to
parse successfully.

Fixes: #68
See: #68

Signed-off-by: coskun ergan <[email protected]>

Author: coskunergan

zephyr-build/src/devicetree/dts.pest

@@ -74,4 +74,4 @@ nodename = @{
     (ASCII_ALPHANUMERIC | "_" | "," | "." | "?" | "-" | "@" | "#")+
 }
 
-WHITESPACE = _{ " " | "\n" | "\t" }
+WHITESPACE = _{ " " | "\r" | "\n" | "\t" }