message: Set default MAVLINK_DIALECT
diff: @@ -7,6 +7,10 @@ include(ExternalProject)
  set(Python3_FIND_REGISTRY "NEVER")
  find_package(Python3 COMPONENTS Interpreter REQUIRED)
  +if (NOT MAVLINK_DIALECT)
  + set(MAVLINK_DIALECT common)
  +endif()
  +
  ExternalProject_add(
  mavlink
  GIT_REPOSITORY https://github.com/mavlink/mavlink
  