ASoC: rt5651: Add devicetree-bindings for jack-detect

Add new properties to the rt5651 dt-bindings for configuring the
jack-detect source and over-current detect settings.

Cc: devicetree@vger.kernel.org
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mark Brown <broonie@kernel.org>