Change -arm-divmod-libcall to a target neutral option.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129045 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/Target/TargetOptions.h

@@ -157,6 +157,10 @@ namespace llvm {
   /// wth earlier copy coalescing.
   extern bool StrongPHIElim;
 
+  /// HasDivModLibcall - This flag indicates whether the target compiler
+  /// runtime library has integer divmod libcalls.
+  extern bool HasDivModLibcall;
+
 } // End llvm namespace
 
 #endif