linux-imx

dpaa2-eth: Minor cleanup in dpaa2_eth_set_rx_taildrop()

Make clear the setting refers to FQ-based taildrop and the threshold
value is given in bytes (the default option).

Reverse the logic of the second argument (pass tx_pause transparently).
This will be helpful further on.

Also don't set the device's Rx taildrop flag unless configuration
succeeds.

Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com>