Fix minor details in SPV_INTEL_optnone extension

Spec: https://github.com/intel/llvm/pull/3198
diff --git a/include/spirv/unified1/spirv.core.grammar.json b/include/spirv/unified1/spirv.core.grammar.json
index 2ff4f9a..f4c9754 100644
--- a/include/spirv/unified1/spirv.core.grammar.json
+++ b/include/spirv/unified1/spirv.core.grammar.json
@@ -8692,7 +8692,9 @@
         },
         {
           "enumerant" : "OptNoneINTEL",
-          "value" : "0x10000"
+          "value" : "0x10000",
+          "capabilities" : [  "OptNoneINTEL" ],
+          "version" : "None"
         }
       ]
     },