wifi: ath6kl: remove unnecessary (void*) conversions

No need cast (void *) to (struct ath6kl *) or
(struct ath6kl_cookie *).
Signed-off-by: Wu Yunchuan <yunchuan@nfschina.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://lore.kernel.org/r/20230919045008.523730-1-yunchuan@nfschina.com

drivers/net/wireless/ath/ath6kl/main.c

@@ -852,14 +852,14 @@ void ath6kl_tgt_stats_event(struct ath6kl_vif *vif, u8 *ptr, u32 len)
 
 void ath6kl_wakeup_event(void *dev)
 {
-	struct ath6kl *ar = (struct ath6kl *) dev;
+	struct ath6kl *ar = dev;
 
 	wake_up(&ar->event_wq);
 }
 
 void ath6kl_txpwr_rx_evt(void *devt, u8 tx_pwr)
 {
-	struct ath6kl *ar = (struct ath6kl *) devt;
+	struct ath6kl *ar = devt;
 
 	ar->tx_pwr = tx_pwr;
 	wake_up(&ar->event_wq);

drivers/net/wireless/ath/ath6kl/txrx.c

@@ -708,7 +708,7 @@ void ath6kl_tx_complete(struct htc_target *target,
 				 packet->endpoint >= ENDPOINT_MAX))
 			continue;
 
-		ath6kl_cookie = (struct ath6kl_cookie *)packet->pkt_cntxt;
+		ath6kl_cookie = packet->pkt_cntxt;
 		if (WARN_ON_ONCE(!ath6kl_cookie))
 			continue;