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 v5.4.198 by commit 063d945795a096432545c44a1197e2ae0e3c4b1d. For more details please see the references link.