net: enetc: add support for the standardized counters

net: enetc: add support for the standardized counters

ENETC v4 provides 64-bit counters for IEEE 802.3 basic and mandatory
managed objects, the IETF Management Information Database (MIB) package
(RFC2665), and Remote Network Monitoring (RMON) statistics. In addition,
some ENETCs support preemption, so these ENETCs have two MACs: MAC 0 is
the express MAC (eMAC), MAC 1 is the preemptible MAC (pMAC). Both MACs
support these statistics.

Signed-off-by: Wei Fang <wei.fang@nxp.com>
Link: https://patch.msgid.link/20260408055849.1314033-2-wei.fang@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>