GitLab

v2: use PIPE_CAP_MEMOBJ to guard the extension

v3 (Timothy Arceri):
 - expose extensions via the cap_mappings array
Signed-off-by: Andres Rodriguez <andresx7@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>