Merge topic 'fix-cuda-qnx' into release-3.19

0832516b Help: Add 3.19 release note about CUDA support on QNX
bcdd486b CUDA: Enable support on QNX

Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: Raul Tambre <raul@tambre.ee>
Merge-request: !5446
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