chore: move plugins to access from model dir

Remove access and setup of plugins from public downloads area.
Assume all plugins are present with model binaries.

Currently with RevC model we are using the following plugins
 - ETMv4ExamplePlugin.so
 - GenericTrace.so
 - libete-plugin.so

A new RevC model package FVP_Base_RevC-2xAEMvA_11.26_11_Linux64.tgz
has been uploaded this package contains both the plugins in plugins
directory.

Change-Id: I0e0f2dd014b6cfa8b6bfa0556db15715814bd9b4
Signed-off-by: Govindraj Raja <govindraj.raja@arm.com>
(cherry picked from commit 7d80d9370e9001097c30a6518c35831fe6ae3a5b)
diff --git a/model/base-aemva.sh b/model/base-aemva.sh
index dee114b..d5f456e 100644
--- a/model/base-aemva.sh
+++ b/model/base-aemva.sh
@@ -11,6 +11,7 @@
 
 	default_var etm_plugin_path "$warehouse/SysGen/PVModelLib/$model_version/$model_build/external/plugins/$model_flavour/ETMv4ExamplePlugin.so"
 	default_var ete_plugin_path "$warehouse/SysGen/PVModelLib/$model_version/$model_build/external/plugins/$model_flavour/libete-plugin.so"
+	default_var generictrace_plugin_path "$warehouse/SysGen/PVModelLib/$model_version/$model_build/external/plugins/$model_flavour/GenericTrace.so"
 else
         # OpenCI enviroment
         source "$ci_root/fvp_utils.sh"
@@ -20,9 +21,10 @@
 	models_dir="$(echo ${fvp_models[$model]} | awk -F ';' '{print $2}')"
         set_model_path "$models_dir"
 
-        # ScalableVectorExtension is located at /opt/model/*/plugins/${model_flavour}
-	default_var etm_plugin_path "${models_dir/models/plugins}/ETMv4ExamplePlugin.so"
-	default_var ete_plugin_path "${models_dir/models/plugins}/libete-plugin.so"
+	default_var ete_plugin_path "/opt/model/Base_RevC_AEMvA_pkg/plugins/Linux64_GCC-9.3/libete-plugin.so"
+	default_var etm_plugin_path "/opt/model/Base_RevC_AEMvA_pkg/plugins/Linux64_GCC-9.3/ETMv4ExamplePlugin.so"
+	default_var generictrace_plugin_path "/opt/model/Base_RevC_AEMvA_pkg/plugins/Linux64_GCC-9.3/GenericTrace.so"
+
 fi
 
 default_var is_dual_cluster 1