New Witherspoon MRW XML

* IPMI sensor IDs were added.
* Fan hwmon labels were added.
* System FRU number was set to 3.

Change-Id: Iee2989b56f04919e2090f0ada372d97395607b6d
Signed-off-by: Matt Spinler <spinler@us.ibm.com>
diff --git a/meta-witherspoon/conf/machine/witherspoon.conf b/meta-witherspoon/conf/machine/witherspoon.conf
index ceedc96..4254507 100644
--- a/meta-witherspoon/conf/machine/witherspoon.conf
+++ b/meta-witherspoon/conf/machine/witherspoon.conf
@@ -13,4 +13,4 @@
 require conf/machine/include/p9.inc
 
 PHOSPHOR_MRW_URI = "git://github.com/open-power/witherspoon-xml"
-PHOSPHOR_MRW_REV = "b92c88f3106bfea675874b14eb66968fd3e17264"
+PHOSPHOR_MRW_REV = "a3b74dd7d0e13bc4fec6f1de7ace3039aa6f27d4"