With the introduction of nvidia-uvm module, unloading nvidia module will fail unless...

With the introduction of nvidia-uvm module, unloading nvidia module will fail unless nvidia-uvm is unloaded.  GH-565 suggests using "remove" or "softdep" modprobe.d clauses to teach modprobe to handle that for us; "rmmod" does not have that functionality, so switch to "modprobe -r".

Origin: upstream, https://github.com/Bumblebee-Project/Bumblebee/commit/1ada79fe5916961fc4e4917f8c63bb184908d986
Bug: https://github.com/Bumblebee-Project/Bumblebee/issues/565
Bug-Debian: 793389

Gbp-Pq: Name modprobe-r-instead-of-rmmod.patch