This patch adds SND_SOC_DAPM_PGA_E to the headset path, which handles
the headset ramp up and down sequences needed for the pop noise
removal.

With this patch the order of the internal components in the twl4030
codec is turned on and off in a correct order.
Signed-off-by: NPeter Ujfalusi <peter.ujfalusi@nokia.com>
Tested-by: NAnuj Aggarwal <anuj.aggarwal@ti.com>
Tested-by: NJarkko Nikula <jhnikula@gmail.com>
Tested-by: NMisael Lopez Cruz  <x0052729@ti.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>