Adding ViroKit. Needs AWSCore :(

mobile/ios/ViroKit.framework/surface_functions_fsh_adreno.glsl

@@ -0,0 +1,12 @@
+highp vec4 _surface_diffuse_color;
+highp vec2 _surface_diffuse_texcoord;
+highp float _surface_diffuse_intensity;
+    
+lowp float _surface_shininess;
+lowp  vec3 _surface_specular_color;
+highp vec2 _surface_specular_texcoord;
+    
+lowp float _surface_alpha;
+lowp  vec3 _surface_normal;
+highp vec3 _surface_position;
+highp vec3 _surface_view;