cmake HAVE_MSMF_DXVA examples

SsageParuders/Android_Native_Surface my_android_opencv/modules/videoio/cmake/detect_msmf.cmake :19 

list(APPEND defs "HAVE_MSMF_DXVA")

joachimBurket/esp32-opencv modules/videoio/cmake/detect_msmf.cmake :19 

list(APPEND defs "HAVE_MSMF_DXVA")