[][openwrt][mt7988][crypto-eip: update CLS API usage]

[Description]
Change crypto-eip CLS control method.
Follow CLS updated API rule. First allocate a new CLS entry, then write
CLS content. Once CLS entry is no longer needed, call free CLS entry API.
Now crypto-eip never hard code CLS's memory index.

[Release-log]
N/A

Change-Id: I3b382335185526d7546eb0e038b9c54e86c1a868
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/7928056
1 file changed