libertas_tf: Add missing __packed annotations

The earlier __packed annotations added in commit d71038c0 ("libertas:
Fix alignment issues in libertas core") were not duplicated when
libertas_af was added in commit 7670e62c ("libertas_tf: header file"),
even though they share several structure definitions. Add the missing
annotations which commit 642a5747 ("libertas_tf: Use struct_group()
for memcpy() region") exposed. Quoting the prior libertas fix: "Data
structures that come over the wire from the WLAN firmware must be
packed."

Reported-by: kernel test robot <lkp@intel.com>
Link: https://lore.kernel.org/linux-mm/202111302102.apaePz2J-lkp@intel.com


Fixes: 642a5747 ("libertas_tf: Use struct_group() for memcpy() region")
Fixes: 7670e62c ("libertas_tf: header file")
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20211201173234.578124-3-keescook@chromium.org