commit 51839e29 upstream.

Some distributions are about to switch to Python 3 support only.
This means that /usr/bin/python, which is Python 2, is not available
anymore. Hence, switch scripts to use Python 3 explicitly.

Signed-off-by: Andy Shevchenko <[email protected]>
Signed-off-by: Masahiro Yamada <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>