Marking two tests expected-to-fail on Linux
- PR-15260: lldb does not display correct value of 1-bit field
- PR-16261: lldb does not display size of (file/class) static array



git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@175111 91177308-0d34-0410-b5e6-96231b3b80d8