[][MT7986 develop][Fix timer dts node]

[Description]
Fix wrong timer frequency due to bl2 changed the setting

[Release-log]

Change-Id: Ie0b0431b35f14edb28dddbef4e55fd061925e2cb
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/4511295
2 files changed