[sonic-linux-kernel] Update submodule (#7170)

Includes below commits ``` be45d3e 2021-03-27 | Integrate kernel patch for hw-mgmt.v.7.0010.1000-bf1 (sonic-net#202) [Stephen Sun] ```
stepanblyschak · Mar 27, 2021 · 6761ac0 · 6761ac0
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commit 6761ac0
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/sonic-linux-kernel b/src/sonic-linux-kernel