target/arm: Explode MO_TExx -> MO_TE | MO_xx

Extract the implicit MO_TE definition in order to replace
it in the next commit.

Mechanical change using:

  $ for n in UW UL UQ UO SW SL SQ; do \
      sed -i -e "s/MO_TE$n/MO_TE | MO_$n/" \
           $(git grep -l MO_TE$n target/arm); \
    done

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20260414005348.4767-3-philmd@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>