Merge branch 'refactoring-designware-vlan-code'

Boon Khai Ng says:

====================
Refactoring designware VLAN code.

Refactoring designware VLAN code and introducing support for
hardware-accelerated VLAN stripping for dwxgmac2 IP,
the current patch set consists of two key changes:

1) Refactoring VLAN Functions:
The first change involves moving common VLAN-related functions
of the DesignWare Ethernet MAC into a dedicated file, stmmac_vlan.c.
This refactoring aims to improve code organization and maintainability
by centralizing VLAN handling logic.

2) Renaming all the functions, symbols and macro into more
generic name and consolidate the same function pointer into one.

3) Enabling VLAN for 10G Ethernet MAC IP:
The second change enables VLAN support specifically
for the 10G Ethernet MAC IP. This enhancement leverages
the hardware capabilities of the to perform VLAN stripping,

Changes from previous submmited patches.
v5:
a) Divided the refactor patch in to two patches,
first patch is to move the code into the separate file
and second patch to update the symbol name

b) get the dwmac4 vlan function up to date and port to
stmmac_vlan.c

c) remove the inline function in function pointer and
use only static function defeination.

d) Remove the outer parenthese that is not needed
on the 1 line return statement.

v4:
a) Updated the commit message to explain the descriptors
behaviour on different hardware.

b) Updated the perfect_match variable with the correct
byte order.

Link: https://lore.kernel.org/20250421162930.10237-1-boon.khai.ng@altera.com
v3: https://lore.kernel.org/20250408081354.25881-1-boon.khai.ng@altera.com
v2: https://lore.kernel.org/BL3PR11MB5748AC693D9D61FB56DB7313C1F32@BL3PR11MB5748.namprd11.prod.outlook.com
v1: https://lore.kernel.org/DM8PR11MB5751E5388AEFCFB80BCB483FC13FA@DM8PR11MB5751.namprd11.prod.outlook.com
====================

Link: https://patch.msgid.link/20250507063812.34000-1-boon.khai.ng@altera.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>