target/arm: Convert ld/st reg+imm9 insns to decodetree

Convert the load and store instructions which use a 9-bit
immediate offset to decodetree.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230602155223.2040685-13-peter.maydell@linaro.org
2 files changed