More fixed on particles for gles 2.0

ScriptableRenderPipeline/LightweightPipeline/LWRP/Shaders/LightweightShaderLibrary/Particles.hlsl

 
 void InitializeSurfaceData(VertexOutputLit IN, out SurfaceData surfaceData)
 {
-    half4 albedo = readTexture(_MainTex, sampler_MainTex, IN) * IN.color;
+    half4 albedo = readTexture(TEXTURE2D_PARAM(_MainTex, sampler_MainTex), IN) * IN.color;
 
     // No distortion Support
     fragColorMode(IN);

ScriptableRenderPipeline/LightweightPipeline/LWRP/Shaders/LightweightStandardParticlesUnlit.shader

             Pass
             {
                 HLSLPROGRAM
+                // Required to compile gles 2.0 with standard srp library
+                #pragma prefer_hlslcc gles
                 #pragma multi_compile __ SOFTPARTICLES_ON
                 #pragma multi_compile_fog
                 #pragma target 2.5