drm/xe/guc_submit: use jiffies for job timeout

drm_sched_init() expects jiffies for the timeout, but here we are
passing the timeout in ms. Convert to jiffies instead.

Fixes: eef55700

 ("drm/xe: Add sysfs for default engine scheduler properties")
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Nirmoy Das <nirmoy.das@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240314121554.223229-2-matthew.auld@intel.com
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
(cherry picked from commit 2c5b70f7

)
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>