rx_buffer_passed_thres_phy - The number of events where the port RX
buffer has passed a fullness threshold.

rx_buffer_full_phy - The number of events where the port RX buffer has
reached 100% fullness.
Signed-off-by: Gal Pressman <galp@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>