HDRenderPipeline: Fix PS4 compiler issue due to macro with multiple ##

Assets/ScriptableRenderPipeline/HDRenderPipeline/Material/Lit/LitData.hlsl

     return result;
 }
 
-#define SURFACEDATA_BLEND_VECTOR3(surfaceData, name, mask) BlendLayeredVector3(surfaceData##0.##name, surfaceData##1.##name, surfaceData##2.##name, surfaceData##3.##name, mask);
-#define SURFACEDATA_BLEND_SCALAR(surfaceData, name, mask) BlendLayeredScalar(surfaceData##0.##name, surfaceData##1.##name, surfaceData##2.##name, surfaceData##3.##name, mask);
+#define SURFACEDATA_BLEND_VECTOR3(surfaceData, name, mask) BlendLayeredVector3(MERGE_NAME(surfaceData, 0) MERGE_NAME(., name), MERGE_NAME(surfaceData, 1) MERGE_NAME(., name), MERGE_NAME(surfaceData, 2) MERGE_NAME(., name), MERGE_NAME(surfaceData, 3) MERGE_NAME(., name), mask);
+#define SURFACEDATA_BLEND_SCALAR(surfaceData, name, mask) BlendLayeredScalar(MERGE_NAME(surfaceData, 0) MERGE_NAME(., name), MERGE_NAME(surfaceData, 1) MERGE_NAME(., name), MERGE_NAME(surfaceData, 2) MERGE_NAME(., name), MERGE_NAME(surfaceData, 3) MERGE_NAME(., name), mask);
 #define PROP_BLEND_SCALAR(name, mask) BlendLayeredScalar(name##0, name##1, name##2, name##3, mask);
 
 void GetLayerTexCoord(float2 texCoord0, float2 texCoord1, float2 texCoord2, float2 texCoord3,

Assets/ScriptableRenderPipeline/ShaderLibrary/Common.hlsl

 #endif
 #include "API/Validate.hlsl"
 
+// Some shader compiler don't support to do multiple ## for concatenation inside the same macro, it require an indirection.
+// This is the purpose of this macro
+#define MERGE_NAME(X, Y) X##Y
+
 // ----------------------------------------------------------------------------
 // Common intrinsic (general implementation of intrinsic available on some platform)
 // ----------------------------------------------------------------------------