Disable run-pass/sepcomp-lib-lto.rs on Android until #18800 is fixed

Author: rprichard

src/test/run-pass/sepcomp-lib-lto.rs

@@ -14,6 +14,7 @@
 // aux-build:sepcomp_lib.rs
 // compile-flags: -C lto
 // no-prefer-dynamic
+// ignore-android FIXME #18800
 
 extern crate sepcomp_lib;
 use sepcomp_lib::a::one;