[][kernel][MT7988][snand][Add compatible snand id for mt7988 soc]

[Description]
Add mt7988 mtk_snand_ids for mt7988 soc instead of mt7986 snand device id,
Because mt7986-snand device id is shared with mt7981 soc and mt7986 soc,
mt7988 can not enable or disable clock randomly .

[Release-log]
N/A

Change-Id: Iebda7a10e233ab18bc62568e4ce7833adb2e2810
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/6836270
4 files changed