ASoC: dt-bindings: rt5645: add cbj sleeve gpio property

Add an optional gpio property to control external CBJ circuits
to avoid some electric noise caused by sleeve/ring2 contacts floating.

Signed-off-by: Derek Fang <derek.fang@realtek.com>

Link: https://msgid.link/r/20240408091057.14165-2-derek.fang@realtek.com


Signed-off-by: Mark Brown <broonie@kernel.org>