drm/xe: Do not sleep in atomic

Set atomic in xe_mmio_wait32() otherwise we would
be scheduling in atomic context.

Fixes: 7dc9b92d ("drm/xe: Remove i915_utils dependency from xe_pcode.")
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Nirmoy Das <nirmoy.das@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

drivers/gpu/drm/xe/xe_gt_mcr.c

@@ -424,7 +424,7 @@ static void mcr_lock(struct xe_gt *gt)
 	 */
 	if (GRAPHICS_VERx100(xe) >= 1270)
 		ret = xe_mmio_wait32(gt, STEER_SEMAPHORE, 0, 0x1, 10, NULL,
-				     false);
+				     true);
 
 	drm_WARN_ON_ONCE(&xe->drm, ret == -ETIMEDOUT);
 }