message: CMakeLists.txt: define for Android x86
  A proprietary plugin using DroneCore needs this define. This is an ugly
  workaround until plugins can have their own proper CMakeLists.txt.
diff: @@ -76,6 +76,10 @@ endif()
  if (ANDROID)
  add_definitions(-frtti)
  + # Workaround for a plugin where the __androidx86__ is necessary.
  + if (ANDROID_ABI STREQUAL "x86")
  + add_definitions(-D__androidx86__)
  + endif()
  endif()
  # Add definition for __FILENAME__ so we don't need to use __FILE__ because it also
  