drm/i915: Remove the "INDEX" suffix from PPAT marcos

Remove the "INDEX" suffix from PPAT marcos as they are bits actually, not
indexes.

Suggested-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Zhi Wang <zhi.a.wang@intel.com>
Cc: Ben Widawsky <benjamin.widawsky@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1505392783-4084-2-git-send-email-zhi.a.wang@intel.com
diff --git a/drivers/gpu/drm/i915/gvt/gtt.c b/drivers/gpu/drm/i915/gvt/gtt.c
index 0bd028f..2801d70 100644
--- a/drivers/gpu/drm/i915/gvt/gtt.c
+++ b/drivers/gpu/drm/i915/gvt/gtt.c
@@ -1971,7 +1971,7 @@ static int alloc_scratch_pages(struct intel_vgpu *vgpu,
 		 */
 		se.val64 |= _PAGE_PRESENT | _PAGE_RW;
 		if (type == GTT_TYPE_PPGTT_PDE_PT)
-			se.val64 |= PPAT_CACHED_INDEX;
+			se.val64 |= PPAT_CACHED;
 
 		for (i = 0; i < page_entry_num; i++)
 			ops->set_entry(scratch_pt, &se, i, false, 0, vgpu);