[][kernel][common][hnat][Fix unbind issue in 2-PPE setup and improve multi-PPE handling]

[Description]
Fix unbind issue in 2-PPE setup and improve multi-PPE handling.

Without this patch, the packet through GDM2 would be forwarded to ADMA
rather than PPE1 in 2-PPE setup, then the packet flow could not be bind.

[Release-log]
N/A


Change-Id: I950a7c423dd2ae2ed74d5a55ee2efc2b32e7627e
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/8589357
2 files changed