Staging: rtl8192e: Rename variable PMKCacheIdx

Rename variable PMKCacheIdx to pmk_cache_idx to fix checkpatch
warning Avoid CamelCase.
Signed-off-by: Tree Davies <tdavies@darkphysics.net>
Link: https://lore.kernel.org/r/20240106055556.430948-20-tdavies@darkphysics.netSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8192e/rtllib_softmac.c

@@ -700,7 +700,7 @@ rtllib_association_req(struct rtllib_network *beacon,
 	unsigned int cxvernum_ie_len = 0;
 	struct lib80211_crypt_data *crypt;
 	int encrypt;
-	int	PMKCacheIdx;
+	int	pmk_cache_idx;
 
 	unsigned int rate_len = (beacon->rates_len ?
 				(beacon->rates_len + 2) : 0) +
@@ -748,8 +748,8 @@ rtllib_association_req(struct rtllib_network *beacon,
 	if (beacon->BssCcxVerNumber >= 2)
 		cxvernum_ie_len = 5 + 2;
 
-	PMKCacheIdx = SecIsInPMKIDList(ieee, ieee->current_network.bssid);
-	if (PMKCacheIdx >= 0) {
+	pmk_cache_idx = SecIsInPMKIDList(ieee, ieee->current_network.bssid);
+	if (pmk_cache_idx >= 0) {
 		wpa_ie_len += 18;
 		netdev_info(ieee->dev, "[PMK cache]: WPA2 IE length: %x\n",
 			    wpa_ie_len);
@@ -878,11 +878,11 @@ rtllib_association_req(struct rtllib_network *beacon,
 	if (wpa_ie_len) {
 		skb_put_data(skb, ieee->wpa_ie, ieee->wpa_ie_len);
 
-		if (PMKCacheIdx >= 0) {
+		if (pmk_cache_idx >= 0) {
 			tag = skb_put(skb, 18);
 			*tag = 1;
 			*(tag + 1) = 0;
-			memcpy((tag + 2), &ieee->PMKIDList[PMKCacheIdx].PMKID,
+			memcpy((tag + 2), &ieee->PMKIDList[pmk_cache_idx].PMKID,
 			       16);
 		}
 	}