phosphor-host-postd.inc: bump version

Change-Id: I3c677f730dddcc1fced75176c4a2cd65cc7b5fae
Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
diff --git a/common/recipes-phosphor/host/phosphor-host-postd.inc b/common/recipes-phosphor/host/phosphor-host-postd.inc
index a281c42..db5accc 100644
--- a/common/recipes-phosphor/host/phosphor-host-postd.inc
+++ b/common/recipes-phosphor/host/phosphor-host-postd.inc
@@ -2,5 +2,5 @@
 LICENSE = "Apache-2.0"
 LIC_FILES_CHKSUM = "file://LICENSE;md5=86d3f3a95c324c9479bd8986968f4327"
 SRC_URI += "git://github.com/openbmc/phosphor-host-postd"
-SRCREV = "a2eab35b8de36052a4f05a79d963f4f1a61e6abb"
+SRCREV = "a6c593aac0ad9e7a2921dfb2473a11b85ee1efa4"