target/arm: Split zdn in do_z2z_n1 and do_z2z_n1_fpst Rename from z2z to zzz to indicate zd and zn may not overlap. During decode, retain z2z name and duplicate the same field into zd and zn. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20260826174213.614571-2-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>