wspoon: Inhibit phosphor-hwmon-config-mrw

Use a hardcoded hwmon config file for the Witherspoon
max31785 chip.

Hopefully somewhat temporary workaround of missing tags in the
Witherspoon MRW.

Change-Id: Ibf03b6c566d600b34b52a0288e1c511b9ff07e4e
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/meta-openbmc-machines/meta-openpower/meta-ibm/meta-witherspoon/conf/machine/witherspoon.conf b/meta-openbmc-machines/meta-openpower/meta-ibm/meta-witherspoon/conf/machine/witherspoon.conf
index 9685e60..69381da 100644
--- a/meta-openbmc-machines/meta-openpower/meta-ibm/meta-witherspoon/conf/machine/witherspoon.conf
+++ b/meta-openbmc-machines/meta-openpower/meta-ibm/meta-witherspoon/conf/machine/witherspoon.conf
@@ -14,3 +14,6 @@
 
 PHOSPHOR_MRW_URI = "git://github.com/open-power/witherspoon-xml"
 PHOSPHOR_MRW_REV = "3a7d05c38c449d9bcd73544a941c0b41121e8e94"
+
+# Inhibit phosphor-hwmon-config-mrw
+VIRTUAL-RUNTIME_phosphor-hwmon-config = ""