net: atlantic: add AQC113 filter data structures, firmware query and register dump

Add filter infrastructure for AQC113 hardware:

- Define L3 (IPv4/IPv6), L4 (TCP/UDP/SCTP), and combined L3L4 filter
  structures with serialized usage counter for filter sharing.
- Define tag policy structure for ethertype filter management.
- Add RPF L3/L4 command bit definitions for filter programming.
- Add filter count constants for L3L4, L3V4, L4, VLAN, and ethertype.
- Extend hw_atl2_priv with filter arrays, base indices, and counts
  discovered from firmware.

Query filter capabilities from firmware shared memory at init time
to discover available L2/L3/L4/VLAN/ethertype filter resources and
ART (Action Resolver Table) configuration.

Add hardware register dump utility for AQC113 debug support.

Signed-off-by: Sukhdeep Singh <sukhdeeps@marvell.com>
Link: https://patch.msgid.link/20260610115448.272-6-sukhdeeps@marvell.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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