Alexandru Croitor fc89d92150 CMake: Fix echoplugin example to be built as an external project
It was accidentally reverted as part of a different change.

Amends 3c1125d9fe41332087ab6213a5514426109ead08

Pick-to: 6.2 6.3
Task-number: QTBUG-90820
Change-Id: Id9b2650c7c42fd9f401cd2da3fcd60ed4d39d212
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Alexey Edelev <alexey.edelev@qt.io>
2021-12-15 15:43:16 +01:00
..
2021-12-03 11:52:21 +08:00