net: airoha: ppe: Configure SRAM PPE entries via the cpu

net: airoha: ppe: Configure SRAM PPE entries via the cpu

Introduce airoha_ppe_foe_commit_sram_entry routine in order to configure
the SRAM PPE entries directly via the CPU instead of using the NPU APIs.
This is a preliminary patch to enable netfilter flowtable hw offload for
AN7583 SoC.

Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/20251017-an7583-eth-support-v3-8-f28319666667@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>