ath9k: enable per-packet TPC on AR9002 based chips

Enable per-packet TPC on AR9002 based chips by default

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index 051540f..82d8f32 100644
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -424,8 +424,7 @@
 	ah->power_mode = ATH9K_PM_UNDEFINED;
 	ah->htc_reset_init = true;
 
-	/* ar9002 does not support TPC for the moment */
-	ah->tpc_enabled = !!AR_SREV_9300_20_OR_LATER(ah);
+	ah->tpc_enabled = true;
 
 	ah->ani_function = ATH9K_ANI_ALL;
 	if (!AR_SREV_9300_20_OR_LATER(ah))