mboxd.bb: bump version

Change-Id: Ic33cfefe0429976bc99349a40ed947ffd505f656
Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
diff --git a/common/recipes-phosphor/mboxd/mboxd.bb b/common/recipes-phosphor/mboxd/mboxd.bb
index a9785b8..ac4fdc2 100644
--- a/common/recipes-phosphor/mboxd/mboxd.bb
+++ b/common/recipes-phosphor/mboxd/mboxd.bb
@@ -17,7 +17,7 @@
 SRC_URI += "file://99-aspeed-lpc-ctrl.rules"
 SRC_URI += "file://aspeed-lpc-ctrl-h.patch"
 
-SRCREV="f0409b99d08d1b15329c714f2b9683645f08de10"
+SRCREV="9dd93cfa7309ed5fd97c47a302dc1e2d227b526e"
 
 MBOXD_FLASH_SIZE ??= "32M"
 SYSTEMD_SUBSTITUTIONS += "FLASH_SIZE:${MBOXD_FLASH_SIZE}:${PN}.service"