sound: tegra_alc5632: remove HP detect GPIO inversion

Both the schematics and practical testing show that the HP detect GPIO
is high when the headphones are plugged in. Hence, the snd_soc_jack_gpio
should not specify to invert the signal.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Andrey Danin <danindrey@mail.ru>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: <stable@vger.kernel.org> # v3.4 v3.5