linux-user/syscall.c: Add EAGAIN to host_to_target_errno_table for Under Alpha host, EAGAIN is redefined to 35, so it need be remapped too. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>