wl18xx: init Tx-released index to 0 on HW init

This ensures the index is 0 on FW recovery and prevents spurious error
prints - "WARNING illegal id in tx completion".

Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
1 file changed