[submodule] Update submodule sonic-linux-kernel to the latest HEAD automatically (#18333)

#### Why I did it
src/sonic-linux-kernel
```
* b6fd1ba - (HEAD -> master, origin/master, origin/HEAD) arm64: dts: marvell: Add DTS for 7215-IXS-A1 board (#378) (4 hours ago) [Pavan-Nokia]
* bab1510 - Disable small sector erase size for UBIFS on flash (#382) (8 hours ago) [Mridul Bajpai]
```
#### How I did it
#### How to verify it
#### Description for the changelog
This commit is contained in:
mssonicbld 2024-03-12 19:01:17 +08:00 committed by GitHub
parent c022066522
commit 283d1ff97d
No known key found for this signature in database
GPG Key ID: B5690EEEBB952194

@ -1 +1 @@
Subproject commit 45295bfbf051bc7d9b591eab465bd01ca81687ff Subproject commit b6fd1ba62cd3677536a33f261cdce0350194706c