Fix separately building SQL plugins with CMake 3.16

Also move the cmake_minimum_required call to the top of the file,
because the line before already requires some policy settings, which is
what cmake_minimum_required() is establishing.

For the standard Qt build, we make sure to get appropriate policy
settings by calling qt_internal_upgrade_cmake_policies().

Change-Id: If97556a9dd00646e83957959d0f9f16916625160
Reviewed-by: Cristian Adam <cristian.adam@qt.io>
(cherry picked from commit d95a1a8bd4734df3c2b6b55e5eb7a86108b682d3)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

0 files changed, 0 insertions, 0 deletions