net: ieee802154: ca8210: Fix incorrectly named function param doc

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

 drivers/net/ieee802154/ca8210.c:724: warning: Function parameter or member 'cas_ctl' not described in 'ca8210_rx_done'
 drivers/net/ieee802154/ca8210.c:724: warning: Excess function parameter 'cas_ctrl' description in 'ca8210_rx_done'

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Stefan Schmidt <stefan@datenfreihafen.org>
Link: https://lore.kernel.org/r/20201102114512.1062724-24-lee.jones@linaro.org


Signed-off-by: Jakub Kicinski <kuba@kernel.org>