mboxd.bb: bump version

Change-Id: Id3eb909a97c7f4209c5d0fae50b96aabd3d657b7
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 9476f6c..bb746e1 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="974507e3e35ae937d6a2d6315f8b06873715bf17"
+SRCREV="406ee26ab27b5a28fa5fbd0e23a8a6cd548e0263"
 
 PROVIDES += "mboxctl"