meta-ibm: move all meta-witherspoon metadata

The metadata common to all IBM systems is confusingly split between
meta-ibm and meta-witherspoon.  Move everything to meta-ibm.

The meta-ibm README is re-written to more accurately reflect the scope
of the layer.

Allow the configuration samples (bblayers.conf.sample,
local.conf.sample) to be sourced from either meta-ibm or
meta-witherspoon until such a time that any workflows and tooling have
had the opportunity to move to meta-ibm.

Change-Id: I50e2ecdd510b5a8f2ba82f79c4e0dc1b9f98892b
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/recipes-phosphor/dump/phosphor-debug-collector_%.bbappend b/recipes-phosphor/dump/phosphor-debug-collector_%.bbappend
index 402e4fa..814699c 100644
--- a/recipes-phosphor/dump/phosphor-debug-collector_%.bbappend
+++ b/recipes-phosphor/dump/phosphor-debug-collector_%.bbappend
@@ -1,4 +1,8 @@
-FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"
+FILESEXTRAPATHS_prepend := "${THISDIR}/${BPN}:"
+
+PACKAGECONFIG_append_witherspoon-128 = " host-dump-offload-pldm"
+PACKAGECONFIG_append_rainier = " host-dump-offload-pldm"
+PACKAGECONFIG_append_witherspoon-tacoma = " host-dump-offload-pldm"
 
 SRC_URI += "file://plugins.d/ibm_elogall"
 
@@ -14,7 +18,6 @@
     workdir = d.getVar('WORKDIR', True)
     script = os.path.join(workdir, 'plugins.d', 'ibm_elogall')
     install_dreport_user_script(script, d)
-
 }
 
 do_install[postfuncs] += "install_ibm_plugins"