romulus:  Add a stubbed inventory map

A recipe should have been provided when obmc-mrw was removed from
machine features.

Change-Id: I3c211e0c76bb5e208b061365b3e7de07f37dff5e
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/meta-openbmc-machines/meta-openpower/meta-ibm/meta-romulus/conf/machine/romulus.conf b/meta-openbmc-machines/meta-openpower/meta-ibm/meta-romulus/conf/machine/romulus.conf
index 2801ee5..23e588b 100644
--- a/meta-openbmc-machines/meta-openpower/meta-ibm/meta-romulus/conf/machine/romulus.conf
+++ b/meta-openbmc-machines/meta-openpower/meta-ibm/meta-romulus/conf/machine/romulus.conf
@@ -12,3 +12,5 @@
 
 PHOSPHOR_MRW_URI = "git://github.com/open-power/romulus-xml"
 PHOSPHOR_MRW_REV = "14b471fbf37f5fb60261de001df83caf5f96d81f"
+
+PREFERRED_PROVIDER_virtual/phosphor-ipmi-fru-inventory = "romulus-ipmi-inventory-map-native"