mboxd.bb: bump version

Change-Id: I3868badfb73a860961594e8dc006f7fdf9b9a4b1
Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
diff --git a/common/recipes-phosphor/mboxd/mboxd.bb b/common/recipes-phosphor/mboxd/mboxd.bb
index a3ea904..2aa9362 100644
--- a/common/recipes-phosphor/mboxd/mboxd.bb
+++ b/common/recipes-phosphor/mboxd/mboxd.bb
@@ -20,7 +20,7 @@
 SRC_URI += "file://99-aspeed-lpc-ctrl.rules"
 SRC_URI += "file://aspeed-lpc-ctrl-h.patch"
 
-SRCREV="5cd1a433f48c659dbebc1c31840890ba29f4fe16"
+SRCREV="8493c33b1adbaf0adaa6bf2b7c1696e86a89ab1b"
 
 PROVIDES += "mboxctl"