[platform]: Update sonic-platform-modules-dell submodule (#1502)

Shuotian Cheng · web-flow · commit 23e79818e3a6 · 2018-03-15T15:30:09.000-07:00
* Enable/disable fstrim on S6100 &amp; Z9100

Signed-off-by: Shu0T1an ChenG &lt;shuche@microsoft.com&gt;
diff --git a/platform/broadcom/sonic-platform-modules-dell b/platform/broadcom/sonic-platform-modules-dell
@@ -1 +1 @@
-Subproject commit fac81d02276d7245233c0401ac699029b0b41cdd
+Subproject commit 8d4517d0f94dd34b232e3fc03f62f11b2c2cb863
