target/arm: Split {full,core}_a64_user_mem_index

Separate get_a64_user_mem_index into two separate functions, one which
returns the full ARMMMUIdx and one which returns the core mmu_idx.

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20251008215613.300150-43-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
1 file changed