[third_party/bcmdhd] Add include/proto/802.11.h to source_set

Bug: 52811
Change-Id: Icf13d5c48672ca53e5684faec5d35f061268e2f8
Reviewed-on: https://fuchsia-review.googlesource.com/c/third_party/bcmdhd/+/470565
Reviewed-by: Karl Ward <karlward@google.com>
2 files changed