mesa-gl: use bb.utils.filter to improve readability

mesa-gl: use bb.utils.filter to improve readability

${@bb.utils.contains('DISTRO_FEATURES', 'x11', 'x11', '', d)}" is
exactly the same as ${@bb.utils.filter('DISTRO_FEATURES', 'x11', d)} so
use the latter to make it easier on the eyes.

Suggested-by: Khem Raj <raj.khem@gmail.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Tested-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Signed-off-by: Quentin Schulz <quentin.schulz@cherry.de>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>