Add syscalls required by UBSan.

UBSan diagnostic mode uses the open and readlink syscalls in the
execution path that writes diagnostics messages to logcat.

Bug: 110791537
Test: media.codec no longer crashing when logging UBSan messages
Change-Id: Ia33bb59c21c65b1019d0d7fc9eaff7b35484fc63
2 files changed