qcacmn: add fields to record transmit timestamp in nbuf cb

Add field 'u.tx.pa_ts.ts_value' to store the driver ingress
timestamp, and field 'u.tx.dev.priv_cb_m.flag_ts_valid' to
indicate whether 'u.tx.pa_ts.ts_value' is available or not.
Both fields must be cleared before fragment mapping, to
avoid overlap with the filed 'u.tx.pa_ts.paddr'.

Change-Id: I645c3c27b0c519417f86e6346f4f018b8d87d701
CRs-Fixed: 3560477

qdf/inc/i_qdf_nbuf_api_m.h

@@ -289,4 +289,31 @@ qdf_nbuf_rx_get_band(qdf_nbuf_t nbuf)
 {
 	return QDF_NBUF_CB_RX_BAND(nbuf);
 }
+
+/**
+ * qdf_nbuf_set_tx_ts() - set tx timestamp of nbuf
+ * @buf: Network buffer
+ *
+ * Return: None
+ */
+static inline void qdf_nbuf_set_tx_ts(qdf_nbuf_t buf)
+{
+	__qdf_nbuf_set_tx_ts(buf, qdf_ktime_real_get());
+}
+
+/**
+ * qdf_nbuf_get_tx_ts() - get tx timestamp of nbuf
+ * @buf: Network buffer
+ * @clear: clear the fields after getting tx timestamp
+ *
+ * Return: tx timestamp
+ */
+static inline qdf_time_t qdf_nbuf_get_tx_ts(qdf_nbuf_t buf, bool clear)
+{
+	qdf_time_t ts = __qdf_nbuf_get_tx_ts(buf);
+
+	if (clear)
+		__qdf_nbuf_clear_tx_ts(buf);
+	return ts;
+}
 #endif /* _QDF_NBUF_M_H */