builtins: windows has only one flavour on ARM
builtins: windows has only one flavour on ARM

Windows on ARM is a hard-float only environment.  Don't try to build two copies
of the same library.

git-svn-id: c199f293c43da69278bea8e88f92242bf3aa95f7@277834 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt