[llvm-mca] Move llvm-mca library to llvm/lib/MCA.

Summary: See PR38731.

Reviewers: andreadb

Subscribers: mgorny, javed.absar, tschuett, gbedwell, andreadb, RKSimon, llvm-commits

Differential Revision: https://reviews.llvm.org/D55557

llvm-svn: 349332
GitOrigin-RevId: cc5e6a72de590bff4f1e68b7271d9f82bc66b995

CODE_OWNERS.TXT

diff --git a/CODE_OWNERS.TXT b/CODE_OWNERS.TXT
index 67b91f2..a6e10fc 100644
--- a/CODE_OWNERS.TXT
+++ b/CODE_OWNERS.TXT
@@ -71,7 +71,7 @@
 N: Andrea Di Biagio
 E: andrea.dibiagio@sony.com
 E: andrea.dibiagio@gmail.com
-D: llvm-mca
+D: MCA, llvm-mca
 
 N: Duncan P. N. Exon Smith
 E: dexonsmith@apple.com