ASoC: twl6040: Convert PLUGINT to no-suspend irq

Convert headset PLUGINT interrupt to NO_SUSPEND type in order to
allow handling of insertion/removal events while device is suspended.

Signed-off-by: Misael Lopez Cruz <misael.lopez@ti.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>