Update ggml/src/ggml-hexagon/ggml-hexagon.cpp

Co-authored-by: Max Krasnyansky <maxk@qti.qualcomm.com>

ggml/src/ggml-hexagon/ggml-hexagon.cpp

@@ -3930,7 +3930,7 @@ static void ggml_backend_hexagon_device_get_props(ggml_backend_dev_t dev, struct
         /* .host_buffer           = */ (bool) opt_hostbuf,
         /* .buffer_from_host_ptr  = */ false,
         /* .events                = */ false,
-        /* .mmap_support          = */ true,
+        /* .mmap_support          = */ false,
     };
 }