[][kernel][mt7988][hnat][Update hnat_entry command for the PPE2]

[Description]
Refactor hnat_entry command for the PPE2.
    - Dump a specific entry from PPE2
      echo 6 <entry_idx> > /sys/kernel/debug/hnat/hnat_entry
    - Delete a specific entry from PPE2
      echo 7 <entry_idx> > /sys/kernel/debug/hnat/hnat_entry

Without this patch, the users are unable to dump or delete entries
from PPE2.

[Release-log]
N/A


Change-Id: I7723910b24119cfd357ed5aac35e618476e916cb
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/8204620
1 file changed