qcacld-3.0: Utilize wlan_is_ie_valid()

In change "qcacld-3.0: Validate Scan Default IEs" in the qcacld-3.0
project (Change-Id: Ifd8739c96a9990f01ff159eb59a7e904f7b8c592) the
utility API hdd_is_ie_valid() was introduced. One review comments was
that this should be a converged API.

Subsequently change "qcacmn: Introduce wlan_is_ie_valid()" in the
qcacmn project (Change-Id: I8d2a520ea70645ab54b450de83452c0035653485)
created the converged API wlan_is_ie_valid(), so now remove
hdd_is_ie_valid() and instead use wlan_is_ie_valid().

Change-Id: I60fcba09e9c962b7891315cea0e273db88a3d49d
CRs-Fixed: 2170493

core/hdd/src/wlan_hdd_cfg80211.c

@@ -668,27 +668,6 @@ static const struct wiphy_wowlan_support wowlan_support_cfg80211_init = {
 };
 #endif
 
-bool hdd_is_ie_valid(const uint8_t *ie, size_t ie_len)
-{
-	uint8_t elen;
-
-	while (ie_len) {
-		if (ie_len < 2)
-			return false;
-
-		elen = ie[1];
-		ie_len -= 2;
-		ie += 2;
-		if (elen > ie_len)
-			return false;
-
-		ie_len -= elen;
-		ie += elen;
-	}
-
-	return true;
-}
-
 /**
  * hdd_add_channel_switch_support()- Adds Channel Switch flag if supported
  * @flags: Pointer to the flags to Add channel switch flag.
@@ -6588,7 +6567,7 @@ static int hdd_config_scan_default_ies(struct hdd_adapter *adapter,
 	}
 
 	scan_ie = nla_data(attr);
-	if (!hdd_is_ie_valid(scan_ie, scan_ie_len)) {
+	if (!wlan_is_ie_valid(scan_ie, scan_ie_len)) {
 		hdd_err("Invalid default scan IEs");
 		return -EINVAL;
 	}

core/hdd/src/wlan_hdd_cfg80211.h

@@ -223,21 +223,6 @@ typedef enum {
 #define CFG_PROPAGATION_DELAY_BASE             (64)
 #define CFG_AGG_RETRY_MIN                      (5)
 
-/**
- * hdd_is_ie_valid() - Determine if an IE sequence is valid
- * @ie: Pointer to the IE buffer
- * @ie_len: Length of the IE buffer @ie
- *
- * This function validates that the IE sequence is valid by verifying
- * that the sum of the lengths of the embedded elements match the
- * length of the sequence.
- *
- * Note well that a 0-length IE sequence is considered valid.
- *
- * Return: true if the IE sequence is valid, false if it is invalid
- */
-bool hdd_is_ie_valid(const uint8_t *ie, size_t ie_len);
-
 struct cfg80211_bss *
 wlan_hdd_cfg80211_update_bss_db(struct hdd_adapter *adapter,
 				struct csr_roam_info *roam_info);