cmake DOPENSUBDIV_HAS_DX11SDK examples

PixarAnimationStudios/OpenSubdiv CMakeLists.txt :681 

add_definitions(
            -DOPENSUBDIV_HAS_DX11SDK
        )

lighttransport/tinyusdz src/osd/CMakeLists.txt :656 

add_definitions(
            -DOPENSUBDIV_HAS_DX11SDK
        )