fix test-demo-android (#3168)

Summary: Pull Request resolved: #3168

Reviewed By: digantdesai, shoumikhin, mikekgfb

Differential Revision: D56367151

fbshipit-source-id: a502e55abf41419c0b1775d0b2ec6ab170fb6299

Author: manuelcandales

examples/demo-apps/android/LlamaDemo/setup.sh

@@ -16,6 +16,7 @@ cmake . -DCMAKE_INSTALL_PREFIX="${CMAKE_OUT}" \
   -DEXECUTORCH_BUILD_EXTENSION_DATA_LOADER=ON \
   -DEXECUTORCH_BUILD_EXTENSION_MODULE=ON \
   -DEXECUTORCH_BUILD_OPTIMIZED=ON \
+  -DEXECUTORCH_BUILD_QUANTIZED=ON \
   -DEXECUTORCH_BUILD_CUSTOM=ON \
   -DCMAKE_BUILD_TYPE=Release \
   -B"${CMAKE_OUT}"