drm/amdgpu/cs: make commands with 0 chunks illegal behaviour.
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v4.14.283 by commit aa25acbe96692e4bf8482311c293f72d8c6034c0. For more details please see the references link.