i#1569 AArch64: Implement encoding for mangling LDR (literal, SIMD&FP).
i#1569 AArch64: Implement encoding for mangling LDR (literal, SIMD&FP).

Review-URL: https://codereview.appspot.com/295990043

AmesianX/dynamorio,AmesianX/dynamorio,AmesianX/dynamorio,AmesianX/dynamorio,AmesianX/dynamorio