ril.h: Add a failure cause for CDMA call failures, rename
RIL_REQUEST_CDMA_VALIDATE_AKEY and minor clarifications
in the interface definitions.

Add failure cause for CDMA call failures due to access blocked by the
network. Specify the fields in RIL_REQUEST_REGISTRATION_STATE response
that are applicable to EVDO. Rename RIL_REQUEST_CDMA_VALIDATE_AKEY to
RIL_REQUEST_VALIDATE_AND_WRITE_AKEY. Elaborate the meaning of Akey in the
RIL_REQUEST_CDMA_VALIDATE_AND_WRITE_AKEY message.
diff --git a/libril/ril.cpp b/libril/ril.cpp
index fc0a52a..6f36b8d 100644
--- a/libril/ril.cpp
+++ b/libril/ril.cpp
@@ -2987,7 +2987,7 @@
         case RIL_REQUEST_CDMA_GET_BROADCAST_SMS_CONFIG:return "CDMA_GET_BROADCAST_SMS_CONFIG";
         case RIL_REQUEST_CDMA_SET_BROADCAST_SMS_CONFIG:return "CDMA_SET_BROADCAST_SMS_CONFIG";
         case RIL_REQUEST_CDMA_SMS_BROADCAST_ACTIVATION:return "CDMA_SMS_BROADCAST_ACTIVATION";
-        case RIL_REQUEST_CDMA_VALIDATE_AKEY: return"CDMA_VALIDATE_AKEY";
+        case RIL_REQUEST_CDMA_VALIDATE_AND_WRITE_AKEY: return"CDMA_VALIDATE_AND_WRITE_AKEY";
         case RIL_REQUEST_CDMA_SUBSCRIPTION: return"CDMA_SUBSCRIPTION";
         case RIL_REQUEST_CDMA_WRITE_SMS_TO_RUIM: return "CDMA_WRITE_SMS_TO_RUIM";
         case RIL_REQUEST_CDMA_DELETE_SMS_ON_RUIM: return "CDMA_DELETE_SMS_ON_RUIM";
diff --git a/libril/ril_commands.h b/libril/ril_commands.h
index de82e70..e07dd43 100644
--- a/libril/ril_commands.h
+++ b/libril/ril_commands.h
@@ -100,7 +100,7 @@
     {RIL_REQUEST_CDMA_QUERY_PREFERRED_VOICE_PRIVACY_MODE, dispatchVoid, responseInts},
     {RIL_REQUEST_CDMA_FLASH, dispatchString, responseVoid},
     {RIL_REQUEST_CDMA_BURST_DTMF, dispatchStrings, responseVoid},
-    {RIL_REQUEST_CDMA_VALIDATE_AKEY, dispatchString, responseVoid},
+    {RIL_REQUEST_CDMA_VALIDATE_AND_WRITE_AKEY, dispatchString, responseVoid},
     {RIL_REQUEST_CDMA_SEND_SMS, dispatchCdmaSms, responseSMS},
     {RIL_REQUEST_CDMA_SMS_ACKNOWLEDGE, dispatchCdmaSmsAck, responseVoid},
     {RIL_REQUEST_GSM_GET_BROADCAST_SMS_CONFIG, dispatchVoid, responseGsmBrSmsCnf},