cmake HAVE_IMGCODEC_PFM examples

SsageParuders/Android_Native_Surface my_android_opencv/modules/imgcodecs/CMakeLists.txt :93 

add_definitions(-DHAVE_IMGCODEC_PFM)

joachimBurket/esp32-opencv modules/imgcodecs/CMakeLists.txt :79 

add_definitions(-DHAVE_IMGCODEC_PFM)