More speaker notes about Android (#1501)

Helps with https://github.com/google/comprehensive-rust/issues/1083

src/android.md

@@ -1,10 +1,25 @@
 # Welcome to Rust in Android
 
-Rust is supported for native platform development on Android. This means that
-you can write new operating system services in Rust, as well as extending
-existing services.
+Rust is supported for system software on Android. This means that
+you can write new services, libraries, drivers or even firmware in Rust
+(or improve existing code as needed).
 
 > We will attempt to call Rust from one of your own projects today. So try to
 > find a little corner of your code base where we can move some lines of code to
 > Rust. The fewer dependencies and "exotic" types the better. Something that
 > parses some raw bytes would be ideal.
+
+<details>
+
+The speaker may mention any of the following given the increased use of Rust
+in Android:
+
+- Service example: [DNS over HTTP](https://security.googleblog.com/2022/07/dns-over-http3-in-android.html)
+
+- Libraries: [Rutabaga Virtual Graphics Interface](https://crosvm.dev/book/appendix/rutabaga_gfx.html)
+
+- Kernel Drivers: [Binder](https://lore.kernel.org/rust-for-linux/20231101-rust-binder-v1-0-08ba9197f637@google.com/)
+
+- Firmware: [pKVM firmware](https://security.googleblog.com/2023/10/bare-metal-rust-in-android.html)
+
+</details>