uma.yml.j2: add repo and feature for vanilla accelerator plugins

resources/templates/uma.yml.j2

@@ -38,6 +38,9 @@ repos:
   mlif:
     url: "https://github.com/tum-ei-eda/mlonmcu-sw.git"
     ref: 1bfcf3c9b90dd532011011386f3a08ad20573c09
+  etiss_accelerator_plugins:
+    url: "https://github.com/tum-ei-eda/etiss-accelerator-plugins.git"
+    ref: main
 # Here all supported frameworks with their specific features are defined
 # Optionally disable unwanted or incomatible backends or features here
 # The configured defaults are used if no backend was specified in the command line options
@@ -109,6 +112,7 @@ targets:
       etissdbg: true
       trace: true
       log_instrs: true
+      vanilla_accelerator: true
       # vext: true
       # pext: true
   host_x86: