Inventory: Add functional/presence sensor support for romulus

Add the config.yaml which defines the mapping between
sensor numbers and Dbus Properties(present,functional)
for CPU,Core and DIMM inventory objects.

Resolves openbmc/openbmc#1345

Change-Id: I578111225a68b0a209f0b14701a37818c815cc6c
Signed-off-by: Ratan Gupta <ratagupt@in.ibm.com>
diff --git a/meta-romulus/recipes-phosphor/ipmi/phosphor-ipmi-sensor-inventory%.bbappend b/meta-romulus/recipes-phosphor/ipmi/phosphor-ipmi-sensor-inventory%.bbappend
new file mode 100644
index 0000000..72d991c
--- /dev/null
+++ b/meta-romulus/recipes-phosphor/ipmi/phosphor-ipmi-sensor-inventory%.bbappend
@@ -0,0 +1 @@
+FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"