fm10k: enable broadcast loopback suppression

fm10k: enable broadcast loopback suppression

In FM10K, a single PCIe port can derive out a few logical ports,
like SRIOV PF/VF devices, VMDQ objects. To better manage them, FM10K
silicon assigns a Unique GLORT ID to each logical port.

When a logical port sends a broadcast packet, the silicon will flood
it to all logical ports, including the one that sent the broadcast packet.
To prevent this, silicon has an rxq register to store the glort id of
the logical port that queue binds to.

FM10K has a switch core inside, which has a loopback suppression
mechanism in the switch level. Switch level loopback suppression mostly
works for the ether port traffic.

This patch assigns a SGLORT for each RX queue, and enables PCIe port
level loopback suppression.

Signed-off-by: Shaopeng He <shaopeng.he@intel.com>
Acked-by: Jing Chen <jing.d.chen@intel.com>