GCC 14 shows -Wshadow=local warnings if an enum conflicts with a local
variable (including a parameter). To avoid this, move the problematic
enum and all of its dependencies after the hundreds of functions that
have a parameter named "instruction".
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>