fbcon: Use kzalloc() in fbconpreparelogo()
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 v5.10.159 by commit d9b53caf0191cee24afd05ca6c83ed873199b52d. For more details please see the references link.