mgmt: fix conflicting TLV-TYPE assignment

Amends df5053824fc53eec6847067faa2da8b0ebb69917

Change-Id: Ifba9fcac63528594c6442973adce313a95116c75
Refs: #4318, #4538
diff --git a/src/mgmt/nfd/control-command.cpp b/src/mgmt/nfd/control-command.cpp
index 556a0ed..07e8b17 100644
--- a/src/mgmt/nfd/control-command.cpp
+++ b/src/mgmt/nfd/control-command.cpp
@@ -275,11 +275,11 @@
 {
   m_requestValidator
     .required(CONTROL_PARAMETER_NAME)
-    .optional(CONTROL_PARAMETER_N_CS_ENTRIES);
+    .optional(CONTROL_PARAMETER_COUNT);
   m_responseValidator
     .required(CONTROL_PARAMETER_NAME)
     .optional(CONTROL_PARAMETER_CAPACITY)
-    .required(CONTROL_PARAMETER_N_CS_ENTRIES);
+    .required(CONTROL_PARAMETER_COUNT);
 }
 
 void
@@ -287,8 +287,8 @@
 {
   this->ControlCommand::validateRequest(parameters);
 
-  if (parameters.hasNCsEntries() && parameters.getNCsEntries() == 0) {
-    BOOST_THROW_EXCEPTION(ArgumentError("NCsEntries must be positive"));
+  if (parameters.hasCount() && parameters.getCount() == 0) {
+    BOOST_THROW_EXCEPTION(ArgumentError("Count must be positive"));
   }
 }