CUDA: Enable support on QNX

Jan Bernlöhrrequested to merge
janbernloehr/cmake:fix-cuda-qnx into master

This fixes the following two issues with the CUDA support on QNX

  • cuda target name is not derived correctly (should be aarch64-qnx).
  • linking cudart must not be linked against rt, dl, pthread.

This enables to use cmake's native cuda support on QNX.

Fixes: #21381 (closed)
Backport: release

Edited by Brad King

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