mboxd.bb: bump version

Change-Id: I48b548fb0e81590cc4e5bc3636bbbe51aed140f1
Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
diff --git a/meta-phosphor/common/recipes-phosphor/mboxd/mboxd.bb b/meta-phosphor/common/recipes-phosphor/mboxd/mboxd.bb
index 2aa9362..c4b73ec 100644
--- a/meta-phosphor/common/recipes-phosphor/mboxd/mboxd.bb
+++ b/meta-phosphor/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="8493c33b1adbaf0adaa6bf2b7c1696e86a89ab1b"
+SRCREV="6c3ccf8c679e52aa50fadff9120abeb5f94ca747"
 
 PROVIDES += "mboxctl"