Update my credits. Can I add "Build breaker" to my entry?

llvm-svn: 27634

Author: Evan Cheng

llvm/CREDITS.TXT

@@ -41,7 +41,10 @@ D: Fixes to the Reassociation pass, various improvement patches
 
 N: Evan Cheng
 E: [email protected]
-D: X86 backend improvements
+D: X86 backend developer
+D: Instruction scheduler improvements
+D: Loop optimizer improvements
+D: Target-independent code generator improvements
 
 N: Jeff Cohen
 E: [email protected]