meta-ibm: prep for new override syntax

Change-Id: I9116ed7260e369136acb39eec15075db2d4dbeba
Signed-off-by: Adriana Kobylak <anoo@us.ibm.com>
diff --git a/meta-ibm/conf/machine/mihawk.conf b/meta-ibm/conf/machine/mihawk.conf
index 2bb67ed..932ed5e 100644
--- a/meta-ibm/conf/machine/mihawk.conf
+++ b/meta-ibm/conf/machine/mihawk.conf
@@ -25,20 +25,20 @@
 
 
 # Inhibit phosphor-hwmon-config-mrw
-VIRTUAL-RUNTIME_phosphor-hwmon-config_df-mrw = ""
+VIRTUAL-RUNTIME_phosphor-hwmon-config:df-mrw = ""
 
 # Inhibit phosphor-fan-presence-mrw-native
-PREFERRED_PROVIDER_virtual/phosphor-fan-presence-config_df-mrw = \
+PREFERRED_PROVIDER_virtual/phosphor-fan-presence-config:df-mrw = \
     "phosphor-fan-presence-config"
 
 # Inhibit phosphor-fan-control-fan-config-mrw-native
-PREFERRED_PROVIDER_virtual/phosphor-fan-control-fan-config_df-mrw = \
+PREFERRED_PROVIDER_virtual/phosphor-fan-control-fan-config:df-mrw = \
     "phosphor-fan-control-fan-config"
 
 # Inhibit mihawk-led-manager-config-native
-PREFERRED_PROVIDER_virtual/phosphor-led-manager-config-native_df-mrw = \
+PREFERRED_PROVIDER_virtual/phosphor-led-manager-config-native:df-mrw = \
     "mihawk-led-manager-config-native"
 
-PREFERRED_PROVIDER_virtual/phosphor-logging-callouts_df-mrw = "mihawk-phosphor-logging-callouts-native"
+PREFERRED_PROVIDER_virtual/phosphor-logging-callouts:df-mrw = "mihawk-phosphor-logging-callouts-native"
 
-PREFERRED_PROVIDER_virtual/openpower-fru-inventory_df-mrw = "mihawk-openpower-fru-inventory-native"
+PREFERRED_PROVIDER_virtual/openpower-fru-inventory:df-mrw = "mihawk-openpower-fru-inventory-native"