ath: Export ath_hw_keysetmac()

ath: Export ath_hw_keysetmac()

Origin: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git/commit?id=2925a8385ec746bf09c11dcadb9af13c26091a4d
Bug-Debian-Security: https://security-tracker.debian.org/tracker/CVE-2020-3702

commit d2d3e36498dd8e0c83ea99861fac5cf9e8671226 upstream.

ath9k is going to use this for safer management of key cache entries.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20201214172118.18100-4-jouni@codeaurora.org
Cc: Pali Rohár <pali@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Gbp-Pq: Topic bugfix/all
Gbp-Pq: Name ath-Export-ath_hw_keysetmac.patch