witherspoon: Bump MRW version

Pick up new IPMI clear sensor

(From meta-ibm rev: 033ecca0a4321aba8000fd289c43aa38721255b2)

Change-Id: I5c42bad754157bcae47463a1e8d6c0d1993e45d8
Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/meta-ibm/meta-witherspoon/conf/machine/witherspoon.conf b/meta-ibm/meta-witherspoon/conf/machine/witherspoon.conf
index 3f7aedc..20f5159 100644
--- a/meta-ibm/meta-witherspoon/conf/machine/witherspoon.conf
+++ b/meta-ibm/meta-witherspoon/conf/machine/witherspoon.conf
@@ -19,7 +19,7 @@
 PHOSPHOR_MRW_LICENSE = "Apache-2.0"
 PHOSPHOR_MRW_LIC_FILES_CHKSUM = "file://LICENSE;md5=e3fc50a88d0a364313df4b21ef20c29e"
 PHOSPHOR_MRW_URI = "git://github.com/open-power/witherspoon-xml"
-PHOSPHOR_MRW_REV = "e76c2fc5aeb512a0eb33438c239746de5b629885"
+PHOSPHOR_MRW_REV = "c622cb5a5dd3ebc2a4eef558d1b70740f914e6f7"
 
 # Inhibit phosphor-hwmon-config-mrw
 VIRTUAL-RUNTIME_phosphor-hwmon-config_df-mrw = ""