utils: fix split-cmdline

If an argument does not start with an "-", it's not necessarily an argument parameter. It can also be e.g. an input file name.

Author: eeckstein

utils/dev-scripts/split-cmdline

@@ -53,7 +53,6 @@ def main():
                 continue
             if not first:
                 # Print option arguments in the same line
-                is_arg_param = is_arg_param or not arg.startswith("-")
                 print(" " if is_arg_param else " \\\n  ", end="")
             first = False