qcacmn: Prefetch Tx HW desc, SW desc and SKB in pipeline fashion

Prefetch TX HW desc, SW desc and SKB in pipeline fashion in Tx.
completion path.
This improves the UDP DL CPU idle% by ~4.5%

Change-Id: I48096e996cd835321ce2681d3981fa94c7189f54

dp/wifi3.0/dp_internal.h

@@ -2193,7 +2193,9 @@ static inline void dp_srng_dst_inv_cached_descs(struct dp_soc *dp_soc,
 }
 #endif /* QCA_CACHED_RING_DESC */
 
-#if defined(QCA_CACHED_RING_DESC) && defined(QCA_DP_RX_HW_SW_NBUF_DESC_PREFETCH)
+#if defined(QCA_CACHED_RING_DESC) && \
+	(defined(QCA_DP_RX_HW_SW_NBUF_DESC_PREFETCH) || \
+	 defined(QCA_DP_TX_HW_SW_NBUF_DESC_PREFETCH))
 /**
  * dp_srng_dst_prefetch() - Wrapper function to prefetch descs from dest ring
  * @hal_soc_hdl: HAL SOC handle