cmake HAVE_IPP_IW_LL examples

SsageParuders/Android_Native_Surface my_android_opencv/cmake/OpenCVFindIPPIW.cmake :16

unset(HAVE_IPP_IW_LL CACHE)

joachimBurket/esp32-opencv cmake/OpenCVFindIPPIW.cmake :16

unset(HAVE_IPP_IW_LL CACHE)