ci: piglit: conditionally build OpenCL tests

For baremetal piglit this is not yet needed.

Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7075>
2 files changed