There were two identical prototypes for hostap_80211_rx() in
drivers/net/wireless/hostap/hostap_80211.h.
This patch fixes kernel Bugzilla #8930.
Reported by Christoph Burger-Scheidlin.
Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>