lib/igt_chamelium: add chamelium_trigger_link_failure

This new function triggers a link failure on the provided port. Another
function called chamelium_supports_trigger_link_failure has been added to
check whether the Chamelium board supports the new method.

Support for TriggerLinkFailure in Chamelium has been added in [1].

[1]: https://chromium.googlesource.com/chromiumos/platform/chameleon/+/44866c7bc2af44da1f7bac4e782d0ed6d7c1400a



Signed-off-by: Simon Ser <simon.ser@intel.com>
Reviewed-by: Arkadiusz Hiler <arkadiusz.hiler@intel.com>