Rename the MIPS routine abiUsesSoftFloat -> useSoftFloat to match
some incoming changes and the general scheme used by features (use/has).

llvm-svn: 236794
diff --git a/llvm/lib/Target/Mips/MipsSEISelLowering.cpp b/llvm/lib/Target/Mips/MipsSEISelLowering.cpp
index d4adf00..0fec687 100644
--- a/llvm/lib/Target/Mips/MipsSEISelLowering.cpp
+++ b/llvm/lib/Target/Mips/MipsSEISelLowering.cpp
@@ -99,7 +99,7 @@
     setTargetDAGCombine(ISD::XOR);
   }
 
-  if (!Subtarget.abiUsesSoftFloat()) {
+  if (!Subtarget.useSoftFloat()) {
     addRegisterClass(MVT::f32, &Mips::FGR32RegClass);
 
     // When dealing with single precision only, use libcalls