ath9k_hw: Update initvals for AR9462

Adjust quick_drop value in the baseband AGC register to
improve RX in HT20 mode.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
1 file changed