ath9k_hw: clean up SREV version checks

There's no need to have separate callbacks for pre-AR9003 vs AR9003
SREV version checks, so just merge those into one function.

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