cmake HAVE_IPP_IW examples

SsageParuders/Android_Native_Surface my_android_opencv/cmake/OpenCVFindIPPIW.cmake :15 

unset(HAVE_IPP_IW CACHE)

joachimBurket/esp32-opencv cmake/OpenCVFindIPPIW.cmake :15 

unset(HAVE_IPP_IW CACHE)