fix bad runtime dependency that was causing -exa to be a suitable candidate for xserver-xorg, thus resulting in no X server in some situations
(From OE-Core rev: 467c59495d83748d35846e8b37548182fea99cbf)
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>