[kernel]: update sonic linux kernel submodule (#2027)

lguohan · web-flow · commit 588da73a7d6a · 2018-09-07T10:40:20.000-07:00
* a910776 2018-09-07 | import upstream optoe chunk offset fix (#60) [lguohan] * 5b4c0aa 2018-09-04 | enable GPIO_ICH (#59) [klhaung] Signed-off-by: Guohan Lu <gulv@microsoft.com>
diff --git a/src/sonic-linux-kernel b/src/sonic-linux-kernel
@@ -1 +1 @@
-Subproject commit c87ebef623b60455edbdd71e33ac2c204b9e681d
+Subproject commit a910776f051945689daa02c0e476576df560491a
