mboxd.bb: bump version

Change-Id: I5ee766316f41d5ef9f74734249c5169175cfaa6a
Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
diff --git a/meta-phosphor/common/recipes-phosphor/mboxd/mboxd.bb b/meta-phosphor/common/recipes-phosphor/mboxd/mboxd.bb
index 72ecc0d..e961593 100644
--- a/meta-phosphor/common/recipes-phosphor/mboxd/mboxd.bb
+++ b/meta-phosphor/common/recipes-phosphor/mboxd/mboxd.bb
@@ -19,7 +19,7 @@
 SRC_URI += "file://99-aspeed-lpc-ctrl.rules"
 SRC_URI += "file://aspeed-lpc-ctrl-h.patch"
 
-SRCREV="90b92fe48ec72b6c15cce24d33ac983548368b98"
+SRCREV="99551ef1fec6851af8903acb22b55d741ea2ad17"
 
 PROVIDES += "mboxctl"