Change in coreboot[master]: soc/mediatek: preserve WDT reset reason for debugging

[Rex-BC Chen (Code Review)]

Attention is currently required from: Hung-Te Lin, Rex-BC Chen, Yu-Ping Wu, Felix Held.
Hello Hung-Te Lin, build bot (Jenkins), Yu-Ping Wu,

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/57270

to look at the new patch set (#4).

Change subject: soc/mediatek: preserve WDT reset reason for debugging
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soc/mediatek: preserve WDT reset reason for debugging

1. Disable external output reset signal in first WDT reset
   to reserve WDT original reset reason for WDT issue in kernel stage.
2. After reserve WDT reset reason, do fully reset again by sending
   external output reset signal.

BUG=b:194025005
TEST=boot to kernel ok and function test pass

Signed-off-by: Fengquan Chen 
Change-Id: I5887a8312f4daab3cbd0a30fea0195670a932e52
---
M src/soc/mediatek/common/wdt.c
1 file changed, 2 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/70/57270/4