Merge branch 'ENETC'

Claudiu Manoil says:

====================
Introduce ENETC ethernet drivers

ENETC is a multi-port virtualized Ethernet controller supporting GbE
designs and Time-Sensitive Networking (TSN) functionality.
ENETC is operating as an SR-IOV multi-PF capable Root Complex Integrated
Endpoint (RCIE).  As such, it contains multiple physical (PF) and virtual
(VF) PCIe functions, discoverable by standard PCI Express.

The patch series adds basic enablement for these otherwise standard
buffer descriptor (BD) ring based ethernet devices (PCIe PFs and VFs),
currently included in the 64-bit dual ARMv8 processors LS1028A SoC.
The driver is portable to 32-bit designs, and it's independent of CPU
endianness.

Contributors:
Alex Marginean <alexandru.marginean@nxp.com>
Catalin Horghidan <catalin.horghidan@nxp.com>

TODO list:
* IEEE 1588 PTP support;
* TSN support;
* MDIO support and VF link management;
* power management support;
* flow control support;
* TC offloading with h/w MQPRIO;
* interrupt coalescing, configurable BD ring sizes, and other usual
config options if missing.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

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