MRW: Use a distro override to enable providers

Now that obmc-mrw is no longer a machine feature we can organize
a bit and enable MRW providers off to the side with a disto override,
de-cluttering wherever non-MRW defaults are specified.

No functional impact but slightly easier for humans to parse.

Change-Id: If2731206b94e16e0b0132a385756eb11178118f2
Tested: Built a Witherspoon image and validated manifest
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/meta-openbmc-machines/meta-openpower/conf/distro/include/openpower-mrw.inc b/meta-openbmc-machines/meta-openpower/conf/distro/include/openpower-mrw.inc
index c8dcdaa..87f0fbf 100644
--- a/meta-openbmc-machines/meta-openpower/conf/distro/include/openpower-mrw.inc
+++ b/meta-openbmc-machines/meta-openpower/conf/distro/include/openpower-mrw.inc
@@ -1 +1,5 @@
 require conf/distro/include/phosphor-mrw.inc
+
+PREFERRED_PROVIDER_virtual/openpower-fru-inventory_df-mrw ?= "openpower-fru-inventory-mrw-native"
+PREFERRED_PROVIDER_virtual/openpower-fru-properties_df-mrw ?= "openpower-fru-properties-mrw-native"
+PREFERRED_PROVIDER_virtual/openpower-occ-control-config-native_df-mrw ?= "openpower-occ-control-config-mrw-native"