ath6kl: use ath6kl_credit prefix consistently

Not all credit functions used that prefix, fix that.

Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
diff --git a/drivers/net/wireless/ath/ath6kl/init.c b/drivers/net/wireless/ath/ath6kl/init.c
index 1cfe16f..c638aab 100644
--- a/drivers/net/wireless/ath/ath6kl/init.c
+++ b/drivers/net/wireless/ath/ath6kl/init.c
@@ -1506,7 +1506,7 @@
 	ath6kl_refill_amsdu_rxbufs(ar, ATH6KL_MAX_AMSDU_RX_BUFFERS);
 
 	/* setup credit distribution */
-	ath6kl_setup_credit_dist(ar->htc_target, &ar->credit_state_info);
+	ath6kl_credit_setup(ar->htc_target, &ar->credit_state_info);
 
 	ath6kl_cookie_init(ar);