[clang] [OpenMP][ASan][Driver] Update build steps for OpenMP ASan. (PR #179636)

[Matt Arsenault via cfe-commits]

arsenm wrote:

> Replace '-mlink-bitcode-file' to '-mlink-builtin-bitcode' in lit tests for asanrtl.bc just like other bitcode libs. 

NFC change should be done separately 

https://github.com/llvm/llvm-project/pull/179636