target/i386: Introduce cc_op_size

Replace arithmetic on cc_op with a helper function.
Assert that the op has a size and that it is valid
for the configuration.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Link: https://lore.kernel.org/r/20240701025115.1265117-6-richard.henderson@linaro.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
3 files changed