vrend: add a missed gbm map info query
vrend: add a missed gbm map info query
Forgot to replace this instance of the legacy assumption with the new
minigbm map info query API.
Fixes: 2fcee2ef2b ("vrend: conditionally build using gbm_bo_get_map_info()")
Signed-off-by: Ryan Neph <ryanneph@google.com>
Edited by Ryan Neph