[asan] Disable one test on Android.

It used to pass by chance and started failing on recent Android builds.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@224818 91177308-0d34-0410-b5e6-96231b3b80d8
[sanitizer] mmap2 syscall works with 4096-byte units instead of bytes.

Ouch.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@224819 91177308-0d34-0410-b5e6-96231b3b80d8