fix build.sh for oe build

Author: chenweng-quic

backends/qualcomm/scripts/build.sh

@@ -171,6 +171,8 @@ if [ "$BUILD_OE_LINUX" = true ]; then
         -DEXECUTORCH_BUILD_CPUINFO=OFF \
         -DEXECUTORCH_BUILD_QNN=ON \
         -DEXECUTORCH_BUILD_DEVTOOLS=ON \
+        -DEXECUTORCH_BUILD_EXTENSION_LLM=ON \
+        -DEXECUTORCH_BUILD_EXTENSION_LLM_RUNNER=ON \
         -DEXECUTORCH_BUILD_EXTENSION_MODULE=ON \
         -DEXECUTORCH_BUILD_EXTENSION_DATA_LOADER=ON \
         -DEXECUTORCH_BUILD_EXTENSION_FLAT_TENSOR=ON \
@@ -184,7 +186,7 @@ if [ "$BUILD_OE_LINUX" = true ]; then
     cmake --build $BUILD_ROOT -j$BUILD_JOB_NUMBER --target install
 
     EXAMPLE_ROOT=examples/qualcomm
-    CMAKE_PREFIX_PATH="${BUILD_ROOT}/lib/cmake/ExecuTorch;${BUILD_ROOT}/third-party/gflags;"
+    CMAKE_PREFIX_PATH="${BUILD_ROOT};${BUILD_ROOT}/third-party/gflags;"
 
     cmake $PRJ_ROOT/$EXAMPLE_ROOT \
         -DCMAKE_BUILD_TYPE=$BUILD_TYPE \