qcacld-3.0: Rename hdd_ap_ctx operatingChannel field

Per the Linux coding style "mixed-case names are frowned upon" so
rename field operatingChannel in struct hdd_ap_ctx.

Change-Id: Id7392319f9fed6aa098f349802624b55c9397cc8
CRs-Fixed: 2134931
diff --git a/core/hdd/src/wlan_hdd_ipa.c b/core/hdd/src/wlan_hdd_ipa.c
index 99f4e9f..25e645c 100644
--- a/core/hdd/src/wlan_hdd_ipa.c
+++ b/core/hdd/src/wlan_hdd_ipa.c
@@ -1429,7 +1429,7 @@
 			if (hostapd_state->bssState == BSS_START
 			    && hostapd_state->qdf_status ==
 			    QDF_STATUS_SUCCESS) {
-				p2pChannel = hdd_ap_ctx->operatingChannel;
+				p2pChannel = hdd_ap_ctx->operating_channel;
 				qdf_copy_macaddr(&p2pBssid,
 						 &adapter->macAddressCurrent);
 #ifdef QCA_LL_LEGACY_TX_FLOW_CONTROL
@@ -1444,7 +1444,7 @@
 			if (hostapd_state->bssState == BSS_START
 			    && hostapd_state->qdf_status ==
 			    QDF_STATUS_SUCCESS) {
-				apChannel = hdd_ap_ctx->operatingChannel;
+				apChannel = hdd_ap_ctx->operating_channel;
 				qdf_copy_macaddr(&apBssid,
 						&adapter->macAddressCurrent);
 #ifdef QCA_LL_LEGACY_TX_FLOW_CONTROL