scripts: fix invalid escape sequence

A backslash-character pair that is not a valid
escape sequence is generating a SyntaxWarning in
Python 3.12 and could generate a SyntaxError in a
future version.

Use a raw string to avoid the escape.

Signed-off-by: Shen Jiamin <shen_jiamin@comp.nus.edu.sg>
Reviewed-by: Joakim Bech <joakim.bech@linaro.org>

scripts/gen_compile_commands.py

@@ -177,7 +177,7 @@ def process_line(root_directory, command_prefix, file_path):
     # escape the pound sign '#', either as '\#' or '$(pound)' (depending on the
     # kernel version). The compile_commands.json file is not interpreted
     # by Make, so this code replaces the escaped version with '#'.
-    prefix = command_prefix.replace('\#', '#').replace('$(pound)', '#')  # noqa: W605
+    prefix = command_prefix.replace(r'\#', '#').replace('$(pound)', '#')
 
     # Use os.path.abspath() to normalize the path resolving '.' and '..' .
     abs_path = os.path.abspath(os.path.join(root_directory, file_path))