Update language to comply with Android’s inclusive language guidance

Replace "blacklist" with "exemptlist", which more accurately describes
what the file does anyways (paths in the file do not receive full ubsan
sanitization).

See https://source.android.com/setup/contribute/respectful-code for reference

Bug: 161896447
Change-Id: Iba859eb563cfc57d249c7ab44e8d24634b5af852
2 files changed