slurm-wlm-contrib FTBFS on ppc64el

[Olivier Gayot]

```
make[1]: Leaving directory '/<<PKGBUILDDIR>>'
   dh_install -a -O--builddirectory
dh_install: warning: Cannot find (any matches for) "usr/lib/*/slurm-wlm/gpu_nvml.so" (tried in ., debian/tmp)

dh_install: warning: slurm-wlm-nvml-plugin missing files: usr/lib/*/slurm-wlm/gpu_nvml.so
dh_install: warning: Cannot find (any matches for) "usr/lib/*/slurm-wlm/gpu_nvml.a" (tried in ., debian/tmp)

dh_install: warning: slurm-wlm-nvml-plugin-dev missing files: usr/lib/*/slurm-wlm/gpu_nvml.a
dh_install: error: missing files, aborting
make: *** [debian/rules:17: binary-arch] Error 25
dpkg-buildpackage: error: fakeroot debian/rules binary-arch subprocess returned exit status 2
```

In the configure stage, there is:

```
checking for nvmlInit in -lnvidia-ml... no
configure: WARNING: unable to locate libnvidia-ml.so and/or nvml.h
```

libnvidia-ml-dev is available on ppc64el but it has different depends:

libnvidia-compute-525 (>= 525) [not ppc64el]
    NVIDIA libcompute package
or libnvidia-compute-525-server (>= 525)
    NVIDIA libcompute package
or libnvidia-ml.so.1 (>= 525)
    Package not available

libnvidia-ml.so.1 (>= 525) [ppc64el]
    Package not available
or no-libcuda1
    virtual package provided by libcudart11.0, libcudart12