drm/xe: Use DRM_GPUVM_RESV_PROTECTED for gpuvm

drm/xe: Use DRM_GPUVM_RESV_PROTECTED for gpuvm

Use DRM_GPUVM_RESV_PROTECTED to use corse-grained locking for the
evict and external object list.
Since we are already holding the relevant RESV locks, for now at least,
we don't need the fine-grained locking.

Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231212100144.6833-3-thomas.hellstrom@linux.intel.com
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>