gpu: add warning about hardcoded PCI slot of FPGA

4 jobs for feature/hls-rtds2gpu in 1 minute and 46 seconds (queued for 2 seconds)
latest
Status Name Job ID Coverage
  Prepare
passed docker-dev #182494
shell linux

00:00:17

 
  Build
failed build:source #182495
docker

00:01:28

 
  Test
skipped test:unit-hardware #182497
villas-fpga
skipped test:unit-software #182496
docker
 
Name Stage Failure
failed
build:source Build
/builds/acs/public/villas/VILLASfpga/tests/rtds2gpu.cpp:37:10: fatal error: villas/gpu.hpp: No such file or directory
#include <villas/gpu.hpp>
^~~~~~~~~~~~~~~~
compilation terminated.
make[2]: *** [tests/CMakeFiles/unit-tests.dir/build.make:207: tests/CMakeFiles/unit-tests.dir/rtds2gpu.cpp.o] Error 1
make[2]: *** Waiting for unfinished jobs....
make[1]: *** [CMakeFiles/Makefile2:199: tests/CMakeFiles/unit-tests.dir/all] Error 2
make: *** [Makefile:152: all] Error 2
ERROR: Job failed: exit code 1