qcacmn: scan: 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 umac scan replace any such comparisons with
logical operations performed on the pointer itself.

Change-Id: I0127e39fb4278e9c8063e2b37e7b46a9311defe7
CRs-Fixed: 2420153

umac/scan/dispatcher/inc/wlan_scan_utils_api.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2018 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2017-2019 The Linux Foundation. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for
  * any purpose with or without fee is hereby granted, provided that the
@@ -546,7 +546,7 @@ util_scan_entry_copy_ie_data(struct scan_cache_entry *scan_entry,
 	u_int16_t    buff_len;
 
 	/* iebuf can be NULL, ie_len must be a valid pointer. */
-	QDF_ASSERT(ie_len != NULL);
+	QDF_ASSERT(ie_len);
 	if (!ie_len)
 		return QDF_STATUS_E_NULL_VALUE;
 
@@ -557,7 +557,7 @@ util_scan_entry_copy_ie_data(struct scan_cache_entry *scan_entry,
 	 * it's large enough.
 	 * If no buffer is passed, just return the length of the IE blob.
 	 */
-	if (iebuf != NULL) {
+	if (iebuf) {
 		if (*ie_len >= buff_len) {
 			qdf_mem_copy(iebuf, buff, buff_len);
 			*ie_len = buff_len;
@@ -591,7 +591,7 @@ util_scan_free_cache_entry(struct scan_cache_entry *scan_entry)
 }
 
 #define conv_ptr(_address, _base1, _base2) \
-	((_address != NULL) ? (((u_int8_t *) (_address) - \
+	((_address) ? (((u_int8_t *) (_address) - \
 	(u_int8_t *) (_base1)) + (u_int8_t *) (_base2)) : NULL)
 
 /**