zd1211rw: zd_chip: Correct misspelled function argument

zd1211rw: zd_chip: Correct misspelled function argument

Fixes the following W=1 kernel build warning(s):

 drivers/net/wireless/zydas/zd1211rw/zd_chip.c:1385: warning: Function parameter or member 'status' not described in 'zd_rx_rate'
 drivers/net/wireless/zydas/zd1211rw/zd_chip.c:1385: warning: Excess function parameter 'rx_status' description in 'zd_rx_rate'

Cc: Daniel Drake <dsd@gentoo.org>
Cc: Ulrich Kunitz <kune@deine-taler.de>
Cc: Kalle Valo <kvalo@codeaurora.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: linux-wireless@vger.kernel.org
Cc: netdev@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200826093401.1458456-12-lee.jones@linaro.org