qcacmn: Add compile time macro to disable rx_pkt_hdr_tlv

Do not process  RX packet header TLV for low memory config profile.
Also, drop decapped frames in invalid peer processing function.

Change-Id: Ifc7721bb25d85c7e277bebf4b962d2f1bfea150c
CRs-Fixed: 2395508

dp/wifi3.0/dp_rx.c

@@ -742,6 +742,12 @@ uint8_t dp_rx_process_invalid_peer(struct dp_soc *soc, qdf_nbuf_t mpdu)
 	uint8_t *rx_tlv_hdr = qdf_nbuf_data(mpdu);
 	uint8_t *rx_pkt_hdr = hal_rx_pkt_hdr_get(rx_tlv_hdr);
 
+	if (!HAL_IS_DECAP_FORMAT_RAW(rx_tlv_hdr)) {
+		QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_DEBUG,
+			  "Drop decapped frames");
+		goto free;
+	}
+
 	wh = (struct ieee80211_frame *)rx_pkt_hdr;
 
 	if (!DP_FRAME_IS_DATA(wh)) {