[ALPS08716345] arm64: dts: mt6897: add wdma gce event

[Description]
for dual pipe only enable right pipe case
add wdma1 frame done event

[Test]
Mestress test

MTK-Commit-Id: bb7bc4b7ed948e04dc9dfaac700d27abbc662c5a

Signed-off-by: Guangyang Duan <guangyang.duan@mediatek.com>
CR-Id: ALPS08716345
Feature: display_mobile
Change-Id: I5132ee88438b79b21b1ffd5f0e7cb2dde48f7c3c