build-ndk-prebuilts.sh: disable bazel.
```
ERROR: /buildbot/src/android/master/out/soong/workspace/external/libcxx/BUILD.bazel:30:18: While resolving toolchains for target //external/libcxx:libc++: com.google.devtools.build.lib.packages.NoSuchTargetException: no such target '@soong_injection//product_config_platforms/products/ndk-eng:ndk-eng_android_riscv64': target 'ndk-eng_android_riscv64' not declared in package 'product_config_platforms/products/ndk-eng' defined by /buildbot/src/android/master/out/bazel/output/external/soong_injection/product_config_platforms/products/ndk-eng/BUILD (Tip: use `query "@soong_injection//product_config_platforms/products/ndk-eng:*"` to see all the targets in that package)
```
Bug: https://github.com/google/android-riscv64/issues/10
Bug: http://b/274509603
Bug: http://b/262192655
Test: build/soong/scripts/build-ndk-prebuilts.sh
Change-Id: I4b6633ab5aab3f01953b628d78ac1d79f2a4ee3c
diff --git a/scripts/build-ndk-prebuilts.sh b/scripts/build-ndk-prebuilts.sh
index 964a866..0d14019 100755
--- a/scripts/build-ndk-prebuilts.sh
+++ b/scripts/build-ndk-prebuilts.sh
@@ -19,9 +19,11 @@
exit 1
fi
-# TODO: remove this when all the riscv64 dependencies exist (currently blocked by
-# http://b/273792258).
+# TODO: remove ALLOW_MISSING_DEPENDENCIES=true when all the riscv64
+# dependencies exist (currently blocked by http://b/273792258).
+# TODO: remove BUILD_BROKEN_DISABLE_BAZEL=1 when bazel supports riscv64 (http://b/262192655).
ALLOW_MISSING_DEPENDENCIES=true \
+BUILD_BROKEN_DISABLE_BAZEL=1 \
TARGET_PRODUCT=ndk build/soong/soong_ui.bash --make-mode --soong-only ${OUT_DIR}/soong/ndk.timestamp
if [ -n "${DIST_DIR}" ]; then