Handle SPARC float command line parameters for SPARCv9

[Brad Smith]

I missed a switch case when adding the initial float handling
support for SPARCv9.

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Index: lib/Driver/Tools.cpp
===================================================================
--- lib/Driver/Tools.cpp	(revision 213105)
+++ lib/Driver/Tools.cpp	(working copy)
@@ -1624,6 +1639,7 @@
     getPPCTargetFeatures(Args, Features);
     break;
   case llvm::Triple::sparc:
+  case llvm::Triple::sparcv9:
     getSparcTargetFeatures(Args, Features);
     break;
   case llvm::Triple::aarch64: