Implement System.arraycopy intrinsic for arm.

Change-Id: I58ae1af5103e281fe59fbe022b718d6d8f293a5e
diff --git a/compiler/utils/arm/assembler_arm32.h b/compiler/utils/arm/assembler_arm32.h
index 3407369..b40c093 100644
--- a/compiler/utils/arm/assembler_arm32.h
+++ b/compiler/utils/arm/assembler_arm32.h
@@ -294,6 +294,7 @@
                              uint32_t immediate,
                              ShifterOperand* shifter_op) OVERRIDE;
 
+  bool ShifterOperandCanAlwaysHold(uint32_t immediate) OVERRIDE;
 
   static bool IsInstructionForExceptionHandling(uintptr_t pc);