GLES2: Resolve some GL errors by excluding cube maps from getting auto generated mipmaps
GLES2: Resolve some GL errors by excluding cube maps from getting auto generated mipmaps

--HG--
branch : v1-8

digimatic/ogre,digimatic/ogre,digimatic/ogre,digimatic/ogre,digimatic/ogre,digimatic/ogre,digimatic/ogre