proto change for wifi link layer usage stats

Adds a new proto field.

Bug: 77603419
Test: compile, unit test
Change-Id: I540e0eda718b6ef586837855e8d650f373f986f2
Merged-In: I540e0eda718b6ef586837855e8d650f373f986f2
(cherry picked from commit 0e0dea406e2a3b256fdb258df75b38c905144534)
1 file changed