intel: honor programPointSize

Set up 3DSTATE_SF according to programPointSize.
diff --git a/icd/intel/pipeline.h b/icd/intel/pipeline.h
index 8151037..c340301 100644
--- a/icd/intel/pipeline.h
+++ b/icd/intel/pipeline.h
@@ -195,6 +195,7 @@
     // XGL_PIPELINE_RS_STATE_CREATE_INFO rs_state;
     bool depthClipEnable;
     bool rasterizerDiscardEnable;
+    bool use_rs_point_size;
 
     XGL_PIPELINE_TESS_STATE_CREATE_INFO tess_state;