target/i386/gdbstub: Expose orig_ax

Copy XML files describing orig_ax from GDB and glue them with
CPUX86State.orig_ax.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-ID: <20240912093012.402366-5-iii@linux.ibm.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
7 files changed