fbdev: fb_pm2fb: Avoid potential divide by zero error
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 v4.19.257 by commit 7f88cdfea8d7f4dbaf423d808241403b2bb945e4. For more details please see the references link.