llama : add --no-host to disable host buffers (#16310)

* implement --no-host to disable host buffer

* fix equal_mparams

* move no-host enumeration order together with other model params

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Co-authored-by: slaren <slarengh@gmail.com>

include/llama.h

@@ -296,6 +296,7 @@ extern "C" {
         bool use_mlock;       // force system to keep model in RAM
         bool check_tensors;   // validate model tensor data
         bool use_extra_bufts; // use extra buffer types (used for weight repacking)
+        bool no_host;         // bypass host buffer allowing extra buffers to be used
     };
 
     // NOTE: changing the default values of parameters marked as [EXPERIMENTAL] may cause crashes or incorrect results in certain configurations