qcacmn: utils: Replace explicit comparison to NULL

Per the Linux Kernel coding style, as enforced by the kernel
checkpatch script, pointers should not be explicitly compared to
NULL. Therefore within utils replace any such comparisons with logical
operations performed on the pointer itself.

Change-Id: Iae6c2f2f0b3041a9397dd13092ea500a8b995fd2
CRs-Fixed: 2418251

utils/logging/src/wlan_logging_sock_svc.c

@@ -569,7 +569,7 @@ static int pktlog_send_per_pkt_stats_to_user(void)
 	while (!list_empty(&gwlan_logging.pkt_stat_filled_list)
 		&& !gwlan_logging.exit) {
 		skb_new = dev_alloc_skb(MAX_SKBMSG_LENGTH);
-		if (skb_new == NULL) {
+		if (!skb_new) {
 			if (!rate_limit) {
 				pr_err("%s: dev_alloc_skb() failed for msg size[%d] drop count = %u\n",
 					__func__, MAX_SKBMSG_LENGTH,
@@ -645,7 +645,7 @@ static int send_filled_buffers_to_user(void)
 	       && !gwlan_logging.exit) {
 
 		skb = dev_alloc_skb(MAX_LOGMSG_LENGTH);
-		if (skb == NULL) {
+		if (!skb) {
 			if (!rate_limit) {
 				pr_err
 					("%s: dev_alloc_skb() failed for msg size[%d] drop count = %u\n",
@@ -671,7 +671,7 @@ static int send_filled_buffers_to_user(void)
 		tot_msg_len = NLMSG_SPACE(payload_len);
 		nlh = nlmsg_put(skb, 0, nlmsg_seq++,
 				ANI_NL_MSG_LOG, payload_len, NLM_F_REQUEST);
-		if (NULL == nlh) {
+		if (!nlh) {
 			spin_lock_irqsave(&gwlan_logging.spin_lock, flags);
 			list_add_tail(&plog_msg->node,
 				      &gwlan_logging.free_list);
@@ -980,7 +980,7 @@ int wlan_logging_sock_init_svc(void)
 
 	for (i = 0; i < MAX_PKTSTATS_BUFF; i++) {
 		gpkt_stats_buffers[i].skb = dev_alloc_skb(MAX_PKTSTATS_LENGTH);
-		if (gpkt_stats_buffers[i].skb == NULL) {
+		if (!gpkt_stats_buffers[i].skb) {
 			pr_err("%s: Memory alloc failed for skb", __func__);
 			/* free previously allocated skb and return */
 			for (j = 0; j < i ; j++)
@@ -1235,7 +1235,7 @@ void wlan_pkt_stats_to_logger_thread(void *pl_hdr, void *pkt_dump, void *data)
 
 	pktlog_hdr = (struct ath_pktlog_hdr *)pl_hdr;
 
-	if (pktlog_hdr == NULL) {
+	if (!pktlog_hdr) {
 		pr_err("%s : Invalid pkt_stats_header\n", __func__);
 		return;
 	}