Update variable usage

ScriptableRenderPipeline/HDRenderPipeline/HDRP/Lighting/Reflection/ScreenSpaceTracing.hlsl

 float LoadDepth(float2 positionSS, int level)
 {
     float pyramidDepth = LOAD_TEXTURE2D_LOD(_DepthPyramidTexture, int2(positionSS.xy) >> level, level).r;
-    float linearDepth = LinearEyeDepth(pyramidDepth, _ZBufferParams);
+    float linearDepth = LinearEyeDepth(pyramidDepth, _DepthBufferParam);
     return linearDepth;
 }
 

ScriptableRenderPipeline/HDRenderPipeline/HDRP/Material/Lit/Lit.hlsl

             float weight = weightNDC.x * weightNDC.y;
 
             float hitDeviceDepth = LOAD_TEXTURE2D_LOD(_DepthPyramidTexture, hit.positionSS, 0).r;
-            float hitLinearDepth = LinearEyeDepth(hitDeviceDepth, _ZBufferParams);
+            float hitLinearDepth = LinearEyeDepth(hitDeviceDepth, _DepthBufferParam);
 
             // Exit if texel is out of color buffer
             // Or if the texel is from an object in front of the object