fix llama-runner-linux-android (#3127)

Summary: Pull Request resolved: #3127

Differential Revision: D56306284

Author: manuelcandales

.ci/scripts/build_llama_android.sh

@@ -42,6 +42,7 @@ build_llama_runner() {
     -DCMAKE_INSTALL_PREFIX=cmake-android-out \
     -DCMAKE_BUILD_TYPE=Release -DPYTHON_EXECUTABLE=python \
     -DEXECUTORCH_BUILD_OPTIMIZED=ON \
+    -DEXECUTORCH_BUILD_QUANTIZED=ON \
     -Bcmake-android-out/examples/models/llama2 examples/models/llama2
 
     cmake --build cmake-android-out/examples/models/llama2 -j4 --config Release