target/m68k: Fix semihost lseek offset computation

target/m68k: Fix semihost lseek offset computation

The arguments for deposit64 are (value, start, length, fieldval); this
appears to have thought they were (value, fieldval, start,
length). Reorder the parameters to match the actual function.

Cc: qemu-stable@nongnu.org
Fixes: 950272506d ("target/m68k: Use semihosting/syscalls.h")
Reported-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230801154519.3505531-1-peter.maydell@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>