Inventory: Add functional/presence sensor support for garrison

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

Change-Id: I6ebb4af7d55f012d3615decaefde83702c946a82
Signed-off-by: Ratan Gupta <ratagupt@in.ibm.com>
diff --git a/meta-garrison/recipes-phosphor/ipmi/phosphor-ipmi-sensor-inventory%.bbappend b/meta-garrison/recipes-phosphor/ipmi/phosphor-ipmi-sensor-inventory%.bbappend
new file mode 100644
index 0000000..72d991c
--- /dev/null
+++ b/meta-garrison/recipes-phosphor/ipmi/phosphor-ipmi-sensor-inventory%.bbappend
@@ -0,0 +1 @@
+FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"