Fixup inventory generation dependencies

Resolves openbmc/openbmc#567.

Change-Id: I68e8e726f839038a6a256ff18a88d936ab0af3e4
Signed-off-by: Matt Spinler <spinler@us.ibm.com>
diff --git a/meta-openbmc-machines/meta-openpower/conf/machine/include/openpower.inc b/meta-openbmc-machines/meta-openpower/conf/machine/include/openpower.inc
index d70cbe6..c333784 100644
--- a/meta-openbmc-machines/meta-openpower/conf/machine/include/openpower.inc
+++ b/meta-openbmc-machines/meta-openpower/conf/machine/include/openpower.inc
@@ -15,3 +15,4 @@
 PREFERRED_PROVIDER_virtual/obmc-flash-mgmt = "packagegroup-op-apps"
 PREFERRED_PROVIDER_virtual/obmc-sensor-mgmt = "packagegroup-op-apps"
 PREFERRED_PROVIDER_virtual/obmc-system-mgmt = "packagegroup-op-apps"
+PREFERRED_PROVIDER_virtual/obmc-inventory-data ?= "${VIRTUAL-RUNTIME_skeleton_workbook}"