[ALPS08827026] ccci: change wdt event record and add epon flg

[Description]
1.Change wdt event record to struct.
2.Add epon check before md off, in case lost wdt event with epon flg.

[Test]
1.MD EE test pass.
2.specific test: reset md -> wdt irq with epon, md reset pass.

MTK-Commit-Id: ff30d7174497900ea793dbecd206ea3ff4fcecdb

Signed-off-by: zhaohui yu <zhaohui.yu@mediatek.com>
CR-Id: ALPS08827026
Feature: CCCI_HIF_CONTROL
Change-Id: Iba2323403a792e10dae922051533fa19df126bfa