Recent Python versions are strict about whitespace and will
complain about mixtures of tabs and spaces. Convert any tabs
so the script just use spaces for indentation.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://github.com/openwrt/openwrt/pull/21116
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>