This is a rare event and should not happen. When it does it is confusing to
work out why. At least we should print a message.
Adjust the emulator to always print decode errors to the console.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present there are DEBUG options spread around the place. If you enable
one and not another you can end up with an emulator that does not work,
since each file can have a different view of what the registers look like.
To fix this, create a global CONFIG_X86EMU_DEBUG option that keeps
everything consistent.
Signed-off-by: Simon Glass <sjg@chromium.org>
