Added me as the owner of the Sparc backend

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168504 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/CODE_OWNERS.TXT b/CODE_OWNERS.TXT
index 08cdcac..d056a7f 100644
--- a/CODE_OWNERS.TXT
+++ b/CODE_OWNERS.TXT
@@ -47,6 +47,10 @@
 E: hfinkel@anl.gov
 D: BBVectorize and the PowerPC target
 
+N: Venkatraman Govindaraju
+E: venkatra@cs.wisc.edu
+D: Sparc Backend (lib/Target/Sparc/*)
+
 N: Doug Gregor
 D: All parts of Clang not covered by someone else