Show option->text of BIOS knob in Redfish response.

GET on /redfish/v1/Registries/BiosAttributeRegistry/BiosAttributeRegistry/
shows list of Attributes under RegistryEntries. Each attribute
corresponds to a knob in BIOS.

If knob in BIOS is of type Enumeration, it will have 'option' with
'text' and 'value'. This text should be mapped to
attribute->Value->ValueDisplayName.

Code changes are made for the same.

Tested
Sample knobs from BIOS.

<knob name="AdaptiveRefreshMgmtLevel" ... >
	<options>
		<option text="Default" value="0x0"/>
		<option text="Level A" value="0x1"/>
		<option text="Level B" value="0x2"/>
		<option text="Level C" value="0x3"/>
	</options>
</knob>
<knob name="ADDDCEn" ... >
	<options>
		<option text="Disable" value="0x0"/>
		<option text="Enable" value="0x1"/>
	</options>
</knob>

Corresponding Redfish response in BiosAttributeRegistry

{
	"AttributeName": "AdaptiveRefreshMgmtLevel",
	"CurrentValue": "0x00",
	"DefaultValue": "0x00",
	"DisplayName": "AdaptiveRefreshMgmtLevel",
	"HelpText": "ARFM Level when ... ",
	"MenuPath": "./",
	"ReadOnly": false,
	"Type": "Enumeration",
	"Value": [
		{
			"ValueDisplayName": "Default",
			"ValueName": "0x0"
		},
		{
			"ValueDisplayName": "Level A",
			"ValueName": "0x1"
		},
		{
			"ValueDisplayName": "Level B",
			"ValueName": "0x2"
		},
		{
			"ValueDisplayName": "Level C",
			"ValueName": "0x3"
		}
	]
},
{
	"AttributeName": "ADDDCEn",
	"CurrentValue": "0x00",
	"DefaultValue": "0x00",
	"DisplayName": "ADDDCEn",
	"HelpText": "Enable/Disable ADDDC Sparing",
	"MenuPath": "./",
	"ReadOnly": false,
	"Type": "Enumeration",
	"Value": [
		{
			"ValueDisplayName": "Disable",
			"ValueName": "0x0"
		},
		{
			"ValueDisplayName": "Enable",
			"ValueName": "0x1"
		}
	]
}

Change-Id: I77b091fe86db21906c2556bb1be87aafc712bc76
Signed-off-by: Arun Lal K M <arun.lal@intel.com>
diff --git a/yaml/xyz/openbmc_project/BIOSConfig/Manager.interface.yaml b/yaml/xyz/openbmc_project/BIOSConfig/Manager.interface.yaml
index b1b7a38..9b8dee7 100644
--- a/yaml/xyz/openbmc_project/BIOSConfig/Manager.interface.yaml
+++ b/yaml/xyz/openbmc_project/BIOSConfig/Manager.interface.yaml
@@ -62,7 +62,7 @@
     - name: BaseBIOSTable
       type:
           dict[string,struct[enum[self.AttributeType],boolean,string,string,string,variant[int64,string],variant[int64,string],array[struct[enum[self.BoundType],
-          variant[int64, string]]]]]
+          variant[int64, string],string]]]]
       description: >
           map{attributeName,struct{attributeType,readonlyStatus,displayname,
           description,menuPath,current,default,
@@ -74,11 +74,11 @@
            "Advanced/Memory Configuration/Memory Operating Speed Selection",
            "0x00",
            "0x0B",
-           { {"OneOf", "auto"},
-             {"OneOf", "2133"},
-             {"OneOf", "2400"},
-             {"OneOf", "2664"},
-             {"OneOf", "2933"}
+           { {"OneOf", "auto", "enum0"},
+             {"OneOf", "2133", "enum1"},
+             {"OneOf", "2400", "enum2"},
+             {"OneOf", "2664", "enum3"},
+             {"OneOf", "2933", "enum4"}
            }
           } }
            Example 2:
@@ -90,9 +90,9 @@
            "Advanced/Debug Feature Selection",
            0x00,
            0x01,
-           { {"MinBound", 0},
-             {"MaxBound", 4},
-             {"ScalarIncrement",1}
+           { {"MinBound", 0, ""},
+             {"MaxBound", 4, ""},
+             {"ScalarIncrement", 1, ""}
            }
           } }