Remove obmc-mrw machine feature

Using MRW or not is distro policy.  As such remove the obmc-mrw
machine feature.

Do not enable the remaining obmc-mrw distro feature in the base
phosphor distro configuration.

Create new distro configs for the systems that use MRW today
(i.e. Witherspoon) that enables the obmc-mrw distro feature and point
the local.conf.sample at the new distro configuration.

Change-Id: If4cedc745b3ee942518fbfd4d5cf2cd5b60f346d
Tested: Built a Witherspoon image and validate the manifest
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/conf/machine/include/openpower.inc b/conf/machine/include/openpower.inc
index cbabdbe..b84be87 100644
--- a/conf/machine/include/openpower.inc
+++ b/conf/machine/include/openpower.inc
@@ -24,9 +24,9 @@
 PREFERRED_PROVIDER_virtual/phosphor-ipmi-fru-hostfw-config ?= "hostboot-inventory-config-native"
 PREFERRED_PROVIDER_virtual/openpower-fru-vpd-layout ?= "openpower-fru-vpd-layout-native"
 PREFERRED_PROVIDER_virtual/openpower-fru-inventory ?= \
-    "${@cf_enabled(d, 'obmc-mrw', 'openpower-fru-inventory-mrw-native', 'openpower-fru-inventory-example-native')}"
+    "${@df_enabled(d, 'obmc-mrw', 'openpower-fru-inventory-mrw-native', 'openpower-fru-inventory-example-native')}"
 PREFERRED_PROVIDER_virtual/openpower-fru-properties ?= \
-    "${@cf_enabled(d, 'obmc-mrw', 'openpower-fru-properties-mrw-native', 'openpower-fru-properties-example-native')}"
+    "${@df_enabled(d, 'obmc-mrw', 'openpower-fru-properties-mrw-native', 'openpower-fru-properties-example-native')}"
 
 # The openpower-occ-control application is data-driven and requires an input
 # yaml of OCC instance numbers to sensor IDs.
@@ -34,4 +34,4 @@
 # configuration files in the format and native sysroot location expected by
 # the openpower-occ-control build process in the native sysroot.
 PREFERRED_PROVIDER_virtual/openpower-occ-control-config-native ?= \
-    "${@cf_enabled(d, 'obmc-mrw', 'openpower-occ-control-config-mrw-native', 'openpower-occ-control-config-example-native')}"
+    "${@df_enabled(d, 'obmc-mrw', 'openpower-occ-control-config-mrw-native', 'openpower-occ-control-config-example-native')}"