Update arista-drivers submodules (#42)

Staphylo · lguohan · commit be0328a59ab6 · 2018-08-11T09:09:03.000Z
diff --git a/platform/barefoot/sonic-platform-modules-arista b/platform/barefoot/sonic-platform-modules-arista
@@ -1 +1 @@
-Subproject commit 8f65ad92c5b5dfec24e8faf068cc9d2374244edf
+Subproject commit a4d1d8d2737cf49bd6cc802dbc6c8c0ff682fa87
diff --git a/platform/broadcom/sonic-platform-modules-arista b/platform/broadcom/sonic-platform-modules-arista
@@ -1 +1 @@
-Subproject commit a7edec0e19e63b4ec437d32928a5362a6d0a9bc9
+Subproject commit a4d1d8d2737cf49bd6cc802dbc6c8c0ff682fa87
