[submodule] Update submodule sonic-linux-kernel to the latest HEAD automatically (#16759)

#### Why I did it
src/sonic-linux-kernel
```
* d5232ab - (HEAD -> master, origin/master, origin/HEAD) arm64: ac5: Fix watchdog timeleft (#334) (7 days ago) [pavannaregundi]
```
#### How I did it
#### How to verify it
#### Description for the changelog
This commit is contained in:
mssonicbld 2023-10-07 16:32:34 +08:00 committed by GitHub
parent 15087c0ac7
commit e30c5c3bd6
No known key found for this signature in database
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@ -1 +1 @@
Subproject commit ecba611b95103865207bbedef8fb41cb7fa5e68c
Subproject commit d5232ab084fd04f71a06c5302dab72d8aca9f304