ath9k: Fix PLL powersave for AR9485

Use the value in ah->config.pll_pwrsave to determine
which array needs to be loaded. Also, initialize
pll_pwrsave to 1 by default.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/ath/ath9k/hw.h

@@ -341,7 +341,7 @@ struct ath9k_ops_config {
 	u32 ant_ctrl_comm2g_switch_enable;
 	bool xatten_margin_cfg;
 	bool alt_mingainidx;
-	bool no_pll_pwrsave;
+	bool pll_pwrsave;
 	bool tx_gain_buffalo;
 	bool led_active_high;
 };