add None as a possible value for DebugInfoFlags
diff --git a/include/spirv/unified1/extinst.debuginfo.grammar.json b/include/spirv/unified1/extinst.debuginfo.grammar.json
index 9212f6f..7d6e8e5 100644
--- a/include/spirv/unified1/extinst.debuginfo.grammar.json
+++ b/include/spirv/unified1/extinst.debuginfo.grammar.json
@@ -377,6 +377,10 @@
       "kind" : "DebugInfoFlags",
       "enumerants" : [
         {
+          "enumerant" : "None",
+          "value" : "0x0000"
+        },
+        {
           "enumerant" : "FlagIsProtected",
           "value" : "0x01"
         },
diff --git a/include/spirv/unified1/extinst.opencl.debuginfo.100.grammar.json b/include/spirv/unified1/extinst.opencl.debuginfo.100.grammar.json
index 08062be..d4cfab2 100644
--- a/include/spirv/unified1/extinst.opencl.debuginfo.100.grammar.json
+++ b/include/spirv/unified1/extinst.opencl.debuginfo.100.grammar.json
@@ -403,6 +403,10 @@
       "kind" : "DebugInfoFlags",
       "enumerants" : [
         {
+          "enumerant" : "None",
+          "value" : "0x0000"
+        },
+        {
           "enumerant" : "FlagIsProtected",
           "value" : "0x01"
         },