Add grammar and symbols for two Google extensions to unified1

* SPV_GOOGLE_decorate_string
* SPV_GOOGLE_hlsl_functionality1
diff --git a/include/spirv/unified1/spirv.lua b/include/spirv/unified1/spirv.lua
index ecd1fc8..7ba4a65 100644
--- a/include/spirv/unified1/spirv.lua
+++ b/include/spirv/unified1/spirv.lua
@@ -366,6 +366,8 @@
         PassthroughNV = 5250,
         ViewportRelativeNV = 5252,
         SecondaryViewportRelativeNV = 5256,
+        HlslCounterBufferGOOGLE = 5634,
+        HlslSemanticGOOGLE = 5635,
     },
 
     BuiltIn = {
@@ -969,6 +971,8 @@
         OpSubgroupBlockWriteINTEL = 5576,
         OpSubgroupImageBlockReadINTEL = 5577,
         OpSubgroupImageBlockWriteINTEL = 5578,
+        OpDecorateStringGOOGLE = 5632,
+        OpMemberDecorateStringGOOGLE = 5633,
     },
 
 }