intel: honor programPointSize

Set up 3DSTATE_SF according to programPointSize.
diff --git a/icd/intel/pipeline.c b/icd/intel/pipeline.c
index 050dce1..ded9095 100644
--- a/icd/intel/pipeline.c
+++ b/icd/intel/pipeline.c
@@ -390,6 +390,7 @@
 {
     pipeline->depthClipEnable = rs_state->depthClipEnable;
     pipeline->rasterizerDiscardEnable = rs_state->rasterizerDiscardEnable;
+    pipeline->use_rs_point_size = !rs_state->programPointSize;
 
     if (rs_state->provokingVertex == XGL_PROVOKING_VERTEX_FIRST) {
         pipeline->provoking_vertex_tri = 0;