If --overhead-factor and --extra-space are passed with =FOO the
check fails. Fix this by checking parsed.overhead_factor and
parsed.extra_space instead.
(From OE-Core rev: 46c24b67d4e9d28e7216a7394090d807cf879fa7)
Signed-off-by: Diego Sueiro <diego.sueiro@arm.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>