meta-romulus: Add ipmi configs

Add ipmi configs for Romulus, where:
* cipher_list.json and dcmi_cap.json are the same as Witherspoon;
* dcmi_sensors.json is specific for Romulus, and the cpu core
  temperature configs are generated by sensor_yaml_config.py tool:
      sensor_yaml_config.py -i config.yaml -o output.json -d
*  dev_id.json is comes from Witherspoon, but manufacture the product id
   is left as 0, since Romulus is just a reference platform.

Tested: Verify ipmitool dcmi commands work ok on Romulus

(From meta-ibm rev: 60365ca96bdf3fee1d1fe29a4508e2b738b85739)

Change-Id: I194de796feb6ffd9207d1ac7a0ef19b3f8df4b5c
Signed-off-by: Lei YU <mine260309@gmail.com>
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/meta-ibm/meta-romulus/recipes-phosphor/ipmi/phosphor-ipmi-config.bbappend b/meta-ibm/meta-romulus/recipes-phosphor/ipmi/phosphor-ipmi-config.bbappend
new file mode 100644
index 0000000..4db6f3a
--- /dev/null
+++ b/meta-ibm/meta-romulus/recipes-phosphor/ipmi/phosphor-ipmi-config.bbappend
@@ -0,0 +1 @@
+FILESEXTRAPATHS_prepend_romulus := "${THISDIR}/${PN}:"