video: fbdev: cirrusfb: check pixclock to avoid divide by zero
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 v4.14.276 by commit 1d3fb46439ad4e8f0c5739eb33d1875ac9e0f135. For more details please see the references link.