[Driver][Mips] Reduce code duplication - use existing function
getMipsCPUAndABI() to get MIPS ABI name during multi-library selection.

No functional changes.

llvm-svn: 213143
diff --git a/clang/lib/Driver/Tools.h b/clang/lib/Driver/Tools.h
index 476c187..4c89676 100644
--- a/clang/lib/Driver/Tools.h
+++ b/clang/lib/Driver/Tools.h
@@ -217,6 +217,9 @@
 }
 
 namespace mips {
+  void getMipsCPUAndABI(const llvm::opt::ArgList &Args,
+                        const llvm::Triple &Triple, StringRef &CPUName,
+                        StringRef &ABIName);
   bool hasMipsAbiArg(const llvm::opt::ArgList &Args, const char *Value);
   bool isNaN2008(const llvm::opt::ArgList &Args, const llvm::Triple &Triple);
   bool isFPXXDefault(const llvm::Triple &Triple, StringRef CPUName,