cmake OPENSUBDIV_HAS_OPENGL examples

PixarAnimationStudios/OpenSubdiv opensubdiv/CMakeLists.txt :445 

target_compile_definitions(${osd_target} INTERFACE OPENSUBDIV_HAS_OPENGL)

lighttransport/tinyusdz src/osd/opensubdiv/CMakeLists.txt :417 

target_compile_definitions(${osd_target} INTERFACE OPENSUBDIV_HAS_OPENGL)