ath11k: use true,false for bool variables

Fix the following coccicheck warning:

drivers/net/wireless/ath/ath11k/dp_rx.c:2964:1-39: WARNING: Assignment
of 0/1 to bool variable
drivers/net/wireless/ath/ath11k/dp_rx.c:2965:1-38: WARNING: Assignment
of 0/1 to bool variable
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200504113336.41249-1-yanaijie@huawei.com

drivers/net/wireless/ath/ath11k/dp_rx.c

@@ -2965,8 +2965,8 @@ static int ath11k_dp_rx_h_verify_tkip_mic(struct ath11k *ar, struct ath11k_peer
 	return 0;
 
 mic_fail:
-	(ATH11K_SKB_RXCB(msdu))->is_first_msdu = 1;
-	(ATH11K_SKB_RXCB(msdu))->is_last_msdu = 1;
+	(ATH11K_SKB_RXCB(msdu))->is_first_msdu = true;
+	(ATH11K_SKB_RXCB(msdu))->is_last_msdu = true;
 
 	rxs->flag |= RX_FLAG_MMIC_ERROR | RX_FLAG_MMIC_STRIPPED |
 		    RX_FLAG_IV_STRIPPED | RX_FLAG_DECRYPTED;