[PATCH v11 7/7] doc/eth_tx: update instance get API

[Ganapati Kundapura]

Added rte_event_eth_tx_adapter_instance_get() details.

Signed-off-by: Ganapati Kundapura <ganapati.kundapura at intel.com>

Reviewed-by: Naga Harish K S V <s.v.naga.harish.k at intel.com>
Acked-by: Jay Jayatheerthan <jay.jayatheerthan at intel.com>

diff --git a/doc/guides/prog_guide/event_ethernet_tx_adapter.rst b/doc/guides/prog_guide/event_ethernet_tx_adapter.rst
index f80d226..4da9bcd 100644
--- a/doc/guides/prog_guide/event_ethernet_tx_adapter.rst
+++ b/doc/guides/prog_guide/event_ethernet_tx_adapter.rst
@@ -165,6 +165,12 @@ in struct ``rte_event_eth_tx_adapter_stats``. The counter values are the sum of
 the counts from the eventdev PMD callback if the callback is supported, and
 the counts maintained by the service function, if one exists.
 
+Getting Adapter instance id
+~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+The  ``rte_event_eth_tx_adapter_instance_get()`` function reports
+tx adapter instance id for a specified ethernet device id and tx queue index.
+
 Tx event vectorization
 ~~~~~~~~~~~~~~~~~~~~~~
 
-- 
2.6.4