mrw-rev.bbclass: bump version

Change-Id: I617ece78cd9e7f296ecf0f441405e6e48bdfd8c4
Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
diff --git a/meta-phosphor/classes/mrw-rev.bbclass b/meta-phosphor/classes/mrw-rev.bbclass
index 3beca22..c8d3f37 100644
--- a/meta-phosphor/classes/mrw-rev.bbclass
+++ b/meta-phosphor/classes/mrw-rev.bbclass
@@ -2,4 +2,4 @@
 MRW_API_SRCREV ?= "31155941629988f0adcf765e7e7dd3af34fb1214"
 
 MRW_TOOLS_SRC_URI ?= "git://github.com/openbmc/phosphor-mrw-tools"
-MRW_TOOLS_SRCREV ?= "37c2e96a08c3f58f5fa525f859436d3e9762cce7"
+MRW_TOOLS_SRCREV ?= "6b465ffba1b433bd131c971b739013bb4a61eb44"