[201811][kernel] advance kernel submodule head (#3773)

Submodule src/sonic-linux-kernel f6a4391..4fed1cb:
  > [kernel] add patch for mlx-platform: Fix parent device in i2c-mux-reg device registration (#112)
This commit is contained in:
Ying Xie 2019-11-18 11:29:59 -08:00 committed by Qi Luo
parent 6a6ce50813
commit 9b3c178fc8

@ -1 +1 @@
Subproject commit f6a43915c5fa4fec330f63f700f735515138739a
Subproject commit 4fed1cb8650c75cab7afc7d09771477126365b45