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 v4.19.247 by commit 15c3bcc9b5349d40207e5f8d4d799b8b4b7d13b8. For more details please see the references link.