enable panaroma for iOS

Assets/ScriptableRenderPipeline/common/ShaderBase.h

 	return half2( 1.0-0.5*recipPi*atan2(dir.x, -dir.z), asin(dir.y)*recipPi+0.5 );
 }
 
-
+#define CUBE_ARRAY_NOT_SUPPORTED
 #ifdef CUBE_ARRAY_NOT_SUPPORTED
 	#define UNITY_DECLARE_ABSTRACT_CUBE_ARRAY						UNITY_DECLARE_TEX2DARRAY
 	#define	UNITY_PASS_ABSTRACT_CUBE_ARRAY							UNITY_PASS_TEX2DARRAY

Assets/ScriptableRenderPipeline/common/TextureCache.cs

 
     // alternative panorama path intended for mobile
     // the member variables below are only in use when m_IsNoCubeArray is true.
-    private bool m_IsNoCubeArray = false;
+    private bool m_IsNoCubeArray = true;
     private Texture2DArray m_CacheNoCubeArray;
     private RenderTexture[] m_StagingRTs;
     private int m_NumPanoMipLevels;