intel: rename intel_rp_from_obj() to intel_render_pass_from_obj()

For consistency.
diff --git a/icd/intel/fb.c b/icd/intel/fb.c
index a5d1ce7..4b4f3df 100644
--- a/icd/intel/fb.c
+++ b/icd/intel/fb.c
@@ -126,7 +126,7 @@
 
 static void render_pass_destroy(struct intel_obj *obj)
 {
-    struct intel_render_pass *rp = intel_rp_from_obj(obj);
+    struct intel_render_pass *rp = intel_render_pass_from_obj(obj);
 
     intel_render_pass_destroy(rp);
 }