Add VMI IPv6 BIOS attributes

These BIOS attributes needed for enabling IPv6 on VMI interfaces

Signed-off-by: Ravi Teja <raviteja28031990@gmail.com>
Change-Id: I90bc815bb5aa303c9fa40be500469592ec0ffb64
diff --git a/oem/ibm/configurations/bios/enum_attrs.json b/oem/ibm/configurations/bios/enum_attrs.json
index 306d2bb..70134ca 100644
--- a/oem/ibm/configurations/bios/enum_attrs.json
+++ b/oem/ibm/configurations/bios/enum_attrs.json
@@ -49,6 +49,32 @@
          "displayName" : "vmi_if1_ipv4_method"
       },
       {
+         "attribute_name":"vmi_if0_ipv6_method",
+         "possible_values":[
+            "IPv6Static",
+            "IPv6DHCP",
+            "SLAAC"
+         ],
+         "default_values":[
+            "IPv6Static"
+         ],
+         "helpText" : "vmi_if0_ipv6_method",
+         "displayName" : "vmi_if0_ipv6_method"
+      },
+      {
+         "attribute_name":"vmi_if1_ipv6_method",
+         "possible_values":[
+            "IPv6Static",
+            "IPv6DHCP",
+            "SLAAC"
+         ],
+         "default_values":[
+            "IPv6Static"
+         ],
+         "helpText" : "vmi_if1_ipv6_method",
+         "displayName" : "vmi_if1_ipv6_method"
+      },
+      {
          "attribute_name":"hb_hyp_switch",
          "possible_values":[
             "PowerVM",