ASoC: rt5645: add inv_jd1_1 flag

The flag will invert jd1_1 status. Which will be used if the jack
connector is normal closed.

Signed-off-by: Bard Liao <bardliao@realtek.com>
Tested-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Mark Brown <broonie@kernel.org>