Update rustc's information on Android's sanitizers

This patch updates sanitizier support definitions for Android inside the
compiler.  It also adjusts the logic to make sure no pre-built sanitizer
runtime libraries are emitted as these are instead provided dynamically
on Android targets.

compiler/rustc_target/src/spec/android_base.rs

@@ -1,10 +1,12 @@
-use crate::spec::TargetOptions;
+use crate::spec::{SanitizerSet, TargetOptions};
 
 pub fn opts() -> TargetOptions {
     let mut base = super::linux_base::opts();
     base.os = "android".into();
+    base.is_like_android = true;
     base.default_dwarf_version = 2;
     base.has_thread_local = false;
+    base.supported_sanitizers = SanitizerSet::ADDRESS;
     // This is for backward compatibility, see https://github.com/rust-lang/rust/issues/49867
     // for context. (At that time, there was no `-C force-unwind-tables`, so the only solution
     // was to always emit `uwtable`).