The patch was missing from yocto-3.4.1 release and only made it to
yocto-3.4.2 unfortunately so let's backport it.
Cc: Quentin Schulz <foss+yocto@0leil.net>
Signed-off-by: Quentin Schulz <quentin.schulz@theobroma-systems.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>