target/arm: Consistently use finalize_memop_asimd() for ASIMD loads/stores

target/arm: Consistently use finalize_memop_asimd() for ASIMD loads/stores

In the recent refactoring we missed a few places which should be
calling finalize_memop_asimd() for ASIMD loads and stores but
instead are just calling finalize_memop(); fix these.

For the disas_ldst_single_struct() and disas_ldst_multiple_struct()
cases, this is not a behaviour change because there the size
is never MO_128 and the two finalize functions do the same thing.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>