[Driver] Expose getARMCPUForMArch() function in the Driver API; NFC.

llvm-svn: 212666
diff --git a/clang/lib/Driver/Tools.cpp b/clang/lib/Driver/Tools.cpp
index 0d601a6..8fc3525 100644
--- a/clang/lib/Driver/Tools.cpp
+++ b/clang/lib/Driver/Tools.cpp
@@ -5025,9 +5025,6 @@
 }
 // Hexagon tools end.
 
-/// getARMCPUForMArch - Get the (LLVM) name of the minimum ARM CPU for the arch we are targeting
-//
-// FIXME: tblgen this.
 const char *arm::getARMCPUForMArch(const ArgList &Args,
                                    const llvm::Triple &Triple) {
   StringRef MArch;
@@ -5049,6 +5046,14 @@
     }
   }
 
+  return driver::getARMCPUForMArch(MArch, Triple);
+}
+
+/// Get the (LLVM) name of the minimum ARM CPU for the arch we are targeting.
+//
+// FIXME: tblgen this.
+const char *driver::getARMCPUForMArch(StringRef MArch,
+                                      const llvm::Triple &Triple) {
   switch (Triple.getOS()) {
   case llvm::Triple::NetBSD:
     if (MArch == "armv6")