GSD-2021-1000251 mt76: mt7915: fix txrate reporting

mt76: mt7915: fix txrate reporting 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 v5.12.4 by commit 4bd926e5ca88eac4d95eacb806b229f8729bc62e, i...