ixgbe: on recv increment rx.ring->stats.yields

ixgbe: on recv increment rx.ring->stats.yields

Orabug: 23177316

It seem to be non intentionally changed to Tx in
commit adc810900a70 ("ixgbe: Refactor busy poll socket code to address
multiple issues")

Lock is taken from ixgbe_low_latency_recv, and there under this
lock we use ixgbe_clean_rx_irq so it looks wrong for me to increment
Tx counter.

Yield stats can be shown through ethtool:
ethtool -S enp129s0 | grep yield

Signed-off-by: Pavel Tikhomirov <ptikhomirov@virtuozzo.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
(cherry picked from commit 75b6462e965dc76d16254b5fcb3f41ca97f6fef0)
Signed-off-by: Brian Maly <brian.maly@oracle.com>