Witherspoon MRW XML bump

Contains some LED_PRIORITY fixes.

Resolves openbmc/openbmc#2198

Change-Id: I7a41964a300312ce57d77e3e756c44c5ebfd365d
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 c253bf0..74cc40d 100644
--- a/meta-witherspoon/conf/machine/witherspoon.conf
+++ b/meta-witherspoon/conf/machine/witherspoon.conf
@@ -13,7 +13,7 @@
 require conf/machine/include/p9.inc
 
 PHOSPHOR_MRW_URI = "git://github.com/open-power/witherspoon-xml"
-PHOSPHOR_MRW_REV = "d5a82f8e062236725b69c2648c8d6af85ce5448e"
+PHOSPHOR_MRW_REV = "317720f56e49c7fb5b4a66bd36082f505ed81317"
 
 # Inhibit phosphor-hwmon-config-mrw
 VIRTUAL-RUNTIME_phosphor-hwmon-config = ""