eth: tg3: silence the GCC 12 array-bounds warning
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 v5.17.14 by commit cf6b99e0b6672a050a5e4e73c5fae0ea612c8fa9. For more details please see the references link.