target-arm: Extract the disas struct to a header file

target-arm: Extract the disas struct to a header file

We will need to share the disassembly status struct between AArch32 and
AArch64 modes. So put it into a header file that both sides can use.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: John Rigby <john.rigby@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1378235544-22290-4-git-send-email-peter.maydell@linaro.org
Message-id: 1368505980-17151-2-git-send-email-john.rigby@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>