qcacmn: Support HW Tx delay stat

Use WLAN_CONFIG_TX_DELAY to enable HW Tx delay for both
SAWF and non-SAWF stats.

Change-Id: I6db7d386c0e3654f53398dcba1db7c5568544b0c
CRs-Fixed: 3262425

dp/wifi3.0/dp_tx.c

@@ -4750,7 +4750,7 @@ void dp_tx_update_connectivity_stats(struct dp_soc *soc,
 }
 #endif
 
-#if defined(WLAN_FEATURE_TSF_UPLINK_DELAY) || defined(CONFIG_SAWF)
+#if defined(WLAN_FEATURE_TSF_UPLINK_DELAY) || defined(WLAN_CONFIG_TX_DELAY)
 QDF_STATUS
 dp_tx_compute_hw_delay_us(struct hal_tx_completion_status *ts,
 			  uint32_t delta_tsf,