Add efficiency percent for PowerSupply

This commit is to add EfficiencyRatings/EfficiencyPercent information
according to the Redfish PowerSupply schema.

In the PDI model, it is assumed that all power supplies have the same
Efficiency Rating. This implementation uses the
xyz.openbmc_project.Control.PowerSupplyAttributes interface for all
power supplies, similar to power.hpp.

ref: http://redfish.dmtf.org/schemas/v1/PowerSupply.v1_5_0.json

Tested: Validator passes
curl -k -H "X-Auth-Token: $token" -X GET
https://${bmc}/redfish/v1/Chassis/chassis/PowerSubsystem/
PowerSupplies/powersupply0
{
"@odata.id": "/redfish/v1/Chassis/chassis/PowerSubsystem/
              PowerSupplies/powersupply0",
"@odata.type": "#PowerSupply.v1_5_0.PowerSupply",
"EfficiencyRatings": [
{
"EfficiencyPercent": 90
}
],
"FirmwareVersion": "383239323732",
"Id": "powersupply0",
"Location": {
"PartLocation": {
"ServiceLabel": "U78DA.ND0.WZS00F6-E0"
}
},
"Manufacturer": "",
"Model": "51E9",
"Name": "powersupply0",
"PartNumber": "03KP466",
"SerialNumber": "YL10KY26E073",
"SparePartNumber": "03FP378",
"Status": {
"Health": "OK",
"State": "Enabled"
}
}

Signed-off-by: George Liu <liuxiwei@inspur.com>
Change-Id: Ic782676f9efb8434f1076e726ff0656d1c27d310
Signed-off-by: Lakshmi Yadlapati <lakshmiy@us.ibm.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/Redfish.md b/Redfish.md
index ca33c81cb8..347048dd5f 100644
--- a/Redfish.md
+++ b/Redfish.md
@@ -379,6 +379,8 @@ Fields common to all schemas
 
 ##### PowerSupply
 
+- EfficiencyRatings
+  - EfficiencyPercent
 - FirmwareVersion
 - Location
 - Manufacturer