Auto merge of #116076 - chriswailes:android-riscv-extension-update, r=cjgillot

Add Zba, Zbb, and Zbs as target features for riscv64-linux-android

This pull request adds the Zba, Zbb, and Zbs target features to the `riscv64-linux-android` target specification.  These features have been enabled and tested internally in Android infrastructure.

Author: bors