[ARM] Adds a ArmCommon folder.

Moves the backpatch flags and struct to a common location for ARM.
I'm sure there will be more things that use this common ARM location in the future.

Source/Core/Core/PowerPC/JitArmCommon/BackPatch.h

@@ -0,0 +1,26 @@
+// Copyright 2014 Dolphin Emulator Project
+// Licensed under GPLv2
+// Refer to the license.txt file included.
+
+#pragma once
+#include "Common/CommonTypes.h"
+
+struct BackPatchInfo
+{
+	enum
+	{
+		FLAG_STORE    = (1 << 0),
+		FLAG_LOAD     = (1 << 1),
+		FLAG_SIZE_8   = (1 << 2),
+		FLAG_SIZE_16  = (1 << 3),
+		FLAG_SIZE_32  = (1 << 4),
+		FLAG_SIZE_F32 = (1 << 5),
+		FLAG_SIZE_F64 = (1 << 6),
+		FLAG_REVERSE  = (1 << 7),
+		FLAG_EXTEND   = (1 << 8),
+	};
+
+	u32 m_fastmem_size;
+	u32 m_fastmem_trouble_inst_offset;
+	u32 m_slowmem_size;
+};