[ci] Enable build tests for Android cross compilation (#2507)

diff --git a/build_tools/cmake/build_android.sh b/build_tools/cmake/build_android.sh
index 8bad968..d269394 100755
--- a/build_tools/cmake/build_android.sh
+++ b/build_tools/cmake/build_android.sh
@@ -50,7 +50,7 @@
   -DANDROID_ABI="$ANDROID_ABI" \
   -DANDROID_PLATFORM=android-29 \
   -DIREE_BUILD_COMPILER=OFF \
-  -DIREE_BUILD_TESTS=OFF \
+  -DIREE_BUILD_TESTS=ON \
   -DIREE_BUILD_SAMPLES=OFF \
   -DIREE_HOST_C_COMPILER=$(which clang) \
   -DIREE_HOST_CXX_COMPILER=$(which clang++)