intel: add some intel_ir info

Just the beginning.  More will be needed.
diff --git a/icd/intel/shader.c b/icd/intel/shader.c
index edbd172..de89262 100644
--- a/icd/intel/shader.c
+++ b/icd/intel/shader.c
@@ -47,6 +47,18 @@
     memcpy(ir->kernel, bil + 1, ir->size);
 
     sh->ir = ir;
+    switch (bil->gen_magic) {
+    case 'v':
+        sh->uses |= INTEL_SHADER_USE_VID;
+        sh->in_count = 1;
+        sh->out_count = 1;
+        break;
+    case 'w':
+        sh->out_count = 1;
+        break;
+    default:
+        break;
+    }
 
     return XGL_SUCCESS;
 }