Try to avoid native recipes accidentally being dependent on
MACHINE_FEATURES. This simple change doesn't prevent MACHINE_FEATURES
set via MACHINE_FEATURES_BACKFILL sneaking through, but it's better
than nothing.
Signed-off-by: Andre McCurdy <armccurdy@gmail.com> Signed-off-by: Ross Burton <ross.burton@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>