Add hb_hyp_switch_current to IBM's enum_attrs.json

This commit adds hb_hyp_switch_current to enum_attrs.json. This
attribute is used to latch the value of hb_hyp_switch for the
duration of a boot.

Signed-off-by: Christian Geddes <crgeddes@us.ibm.com>
Change-Id: Ie08255bb079bd2378680a85d416b074291181119
diff --git a/oem/ibm/configurations/bios/enum_attrs.json b/oem/ibm/configurations/bios/enum_attrs.json
index d821818..c5dc76e 100644
--- a/oem/ibm/configurations/bios/enum_attrs.json
+++ b/oem/ibm/configurations/bios/enum_attrs.json
@@ -57,7 +57,7 @@
          "default_values":[
             "PowerVM"
          ],
-         "helpText" : "hb_hyp_switch",
+         "helpText" : "Tells the host boot fw which type of hypervisor will be loaded.",
          "displayName" : "hb_hyp_switch",
          "dbus":
             {
@@ -69,6 +69,19 @@
             }
       },
       {
+         "attribute_name":"hb_hyp_switch_current",
+         "possible_values":[
+            "PowerVM",
+            "OPAL"
+         ],
+         "default_values":[
+            "PowerVM"
+         ],
+         "helpText" : "Do not set this attribute directly; set hb_hyp_switch instead.",
+         "displayName" : "hb_hyp_switch (current)",
+         "readOnly":true
+      },
+      {
          "attribute_name":"pvm_stop_at_standby",
          "possible_values":[
             "Disabled",