ath9k: get rid of double queueing of rx frames on EDMA

Process rx status directly instead of separating the completion test from
the actual rx status processing.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --cc drivers/net/wireless/ath/ath9k/ar9003_mac.c
Simple merge

diff --cc drivers/net/wireless/ath/ath9k/ath9k.h
Simple merge

diff --cc drivers/net/wireless/ath/ath9k/recv.c
Simple merge