[kernel]: update sonic linux kernel submodule (#2084)

kevinwangsk · lguohan · commit d629f7599dc9 · 2018-09-26T20:22:41.000-07:00
* 90c4cdb 2018-09-22 | Fix a mlnx hardware-management issue (#61) Signed-off-by: Kevin Wang <kevinw@mellanox.com>
diff --git a/src/sonic-linux-kernel b/src/sonic-linux-kernel
@@ -1 +1 @@
-Subproject commit a910776f051945689daa02c0e476576df560491a
+Subproject commit 90c4cdb3be1a70be21abbaa92e15c01cd24164af
