CVE-2024-26999 serial/pmac_zilog: Remove flawed mitigation for rx irq flood

In the Linux kernel, the following vulnerability has been resolved: serial/pmaczilog: Remove flawed mitigation for rx irq flood The mitigation was intended to stop the irq completely. That may be better than a hard lock-up but it turns out that you get a crash anyway if you're using pmaczilog as ...