HDRenderPipeline: Update correctly AtmosphericScattering.cs.hlsl

ScriptableRenderPipeline/HDRenderPipeline/HDRP/Sky/AtmosphericScattering/AtmosphericScattering.cs

         Exponential
     }
 
+    [GenerateHLSL]
+    public enum FogColorMode
+    {
+        ConstantColor,
+        SkyColor,
+    }
+
     [Serializable]
     public sealed class FogTypeParameter : VolumeParameter<FogType>
     {
         }
     }
 
-    [GenerateHLSL]
-    public enum FogColorMode
-    {
-        ConstantColor,
-        SkyColor,
-    }
-
-}
+}

ScriptableRenderPipeline/HDRenderPipeline/HDRP/Sky/AtmosphericScattering/AtmosphericScattering.cs.hlsl

 #ifndef ATMOSPHERICSCATTERING_CS_HLSL
 #define ATMOSPHERICSCATTERING_CS_HLSL
 //
-// UnityEngine.Experimental.Rendering.HDPipeline.AtmosphericScatteringSettings+FogType:  static fields
+// UnityEngine.Experimental.Rendering.HDPipeline.FogType:  static fields
 //
 #define FOGTYPE_NONE (0)
 #define FOGTYPE_LINEAR (1)
-// UnityEngine.Experimental.Rendering.HDPipeline.AtmosphericScatteringSettings+FogColorMode:  static fields
+// UnityEngine.Experimental.Rendering.HDPipeline.FogColorMode:  static fields
 //
 #define FOGCOLORMODE_CONSTANT_COLOR (0)
 #define FOGCOLORMODE_SKY_COLOR (1)