Avoid a separate library for the CUDA code in SciberQuest

The library existing or not depending on whether CUDA is enabled isn't a
great idea. Instead, just compile the sources then put them right into
the module (like the non-CUDA codepath).

Change-Id: Ia44a9298c7e027cb66d3d25581d335ae1829f7f6
Merge topic 'make-sciberquest-module' into next

a7dad4b Avoid a separate library for the CUDA code in SciberQuest