[][MAC80211][hnat][Add multiple PPE allocation of the ETH for mt7988]

[Description]
Add multiple PPE allocation of the ETH for mt7988.

This patch allows for routing of ETH to ETH/WiFi traffic to different
PPE ports based on the GDM ID.

Without this patch, the PPE0 is the only opotion for ETH to ETH/WiFi
traffic.

[Release-log]
N/A


Change-Id: I391700c0a86f47aaceae81d2acc0f0fb512ee0f6
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/8257583
2 files changed