PCI: mt7621: Add sentinel to quirks table
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 v5.15.86 by commit 3e9c395ef2d52975b2c2894d2da09d6db2958bc6, it was introduced in version v5.5 by commit b483b4e4d3f6bfd5089b9e6dc9ba259879c6ce6f. For more details please see the references link.