ClspvReflection non-sematic: add NormalizedSamplerMaskPushConstant (#377)

This is needed to implement 3D Image read using unnormalised sampler.
Ref google/clspv#1202

include/spirv/unified1/NonSemanticClspvReflection.h

diff --git a/include/spirv/unified1/NonSemanticClspvReflection.h b/include/spirv/unified1/NonSemanticClspvReflection.h
index 1a31549..4ee87c2 100644
--- a/include/spirv/unified1/NonSemanticClspvReflection.h
+++ b/include/spirv/unified1/NonSemanticClspvReflection.h
@@ -33,7 +33,7 @@
 #endif
 
 enum {
-    NonSemanticClspvReflectionRevision = 5,
+    NonSemanticClspvReflectionRevision = 6,
     NonSemanticClspvReflectionRevision_BitWidthPadding = 0x7fffffff
 };
 
@@ -78,6 +78,7 @@
     NonSemanticClspvReflectionPrintfInfo = 38,
     NonSemanticClspvReflectionPrintfBufferStorageBuffer = 39,
     NonSemanticClspvReflectionPrintfBufferPointerPushConstant = 40,
+    NonSemanticClspvReflectionNormalizedSamplerMaskPushConstant = 41,
     NonSemanticClspvReflectionInstructionsMax = 0x7fffffff
 };
 

include/spirv/unified1/extinst.nonsemantic.clspvreflection.grammar.json

diff --git a/include/spirv/unified1/extinst.nonsemantic.clspvreflection.grammar.json b/include/spirv/unified1/extinst.nonsemantic.clspvreflection.grammar.json
index d6499cc..cfccc80 100644
--- a/include/spirv/unified1/extinst.nonsemantic.clspvreflection.grammar.json
+++ b/include/spirv/unified1/extinst.nonsemantic.clspvreflection.grammar.json
@@ -1,5 +1,5 @@
 {
-  "revision" : 5,
+  "revision" : 6,
   "instructions" : [
     {
       "opname" : "Kernel",
@@ -395,6 +395,16 @@
       { "kind" : "IdRef", "name" : "Size"},
       { "kind" : "IdRef", "name" : "BufferSize"}
       ]
+    },
+    {
+    "opname" : "NormalizedSamplerMaskPushConstant",
+    "opcode" : 41,
+    "operands" : [
+      { "kind" : "IdRef", "name" : "Kernel" },
+      { "kind" : "IdRef", "name" : "Ordinal" },
+      { "kind" : "IdRef", "name" : "Offset" },
+      { "kind" : "IdRef", "name" : "Size" }
+      ]
     }
   ],
   "operand_kinds" : [