drm/xe: Add MI_SEMAPHORE_WAIT command definition

drm/xe: Add MI_SEMAPHORE_WAIT command definition

This command supports memory based Semaphore WAIT. Memory based
semaphores will be used for synchronization between the Producer
and the Consumer contexts. Producer and Consumer Contexts could
be running on different engines or on the same engine inside GT.

Bspec: 45749, 60244
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Michał Winiarski <michal.winiarski@intel.com>
Link: https://patch.msgid.link/20260303201354.17948-3-michal.wajdeczko@intel.com