linux 6.1.y: NR_CPUS is buggy on 6.1, let's ignore the setting with a warning

https://bugzilla.kernel.org/show_bug.cgi?id=216823
https://github.com/Frogging-Family/linux-tkg/issues/696

linux-tkg-config/prepare

@@ -1573,10 +1573,14 @@ CONFIG_DEBUG_INFO_BTF_MODULES=y\r
   fi
 
   # NR_CPUS
+  if [ "$_basever" != "601" ]; then
     if [ -n "$_NR_CPUS_value" ]; then
       scripts/config --set-val "NR_CPUS" "$_NR_CPUS_value"
       _enable "FORCE_NR_CPUS"
     fi
+  else
+    warning "NR_CPUS is bugged on 6.1.y, so your setting was ignored"
+  fi
 
   fi