airoha: backport upstream patch for Flow Offload support for AN7581

airoha: backport upstream patch for Flow Offload support for AN7581

Backpot upstream patch for Flow Offload support for AN7581 and refresh
all affected patch. To correctly work a dedicated firmware is needed to
use the dedicated Network Coprocessor (NPU).

This also introduce good cleanup and moves the driver in a dedicated
Airoha directory. While currently not totally usable (due to lack of
firmware blob) this is needed to backport support for external PHY/SFP
support.

Refresh all affected patch.

Tested-by: Aleksander Jan Bajkowski <olek2@wp.pl> # tested on Quantum W1700k
Tested-by: Andrew LaMarche <andrewjlamarche@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/18166
(cherry picked from commit ad2077165b337d2fe1b60a1a6d306ad355961952)
[ refresh patches ]
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>