[submodule] Update submodule sonic-linux-kernel to the latest HEAD automatically (#16757)

#### Why I did it
src/sonic-linux-kernel
```
* ecba611 - (HEAD -> master, origin/master, origin/HEAD) arm64: Enable CONFIG_KEXEC_FILE (#333) (6 hours ago) [pavannaregundi]
```
#### How I did it
#### How to verify it
#### Description for the changelog
This commit is contained in:
mssonicbld 2023-09-29 16:32:35 +08:00 committed by GitHub
parent 07f8507911
commit ab097226b3
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@ -1 +1 @@
Subproject commit 3158031ebfda16989b10b75230beee8aa43deb97 Subproject commit ecba611b95103865207bbedef8fb41cb7fa5e68c