power: qpnp-smblite: Add support for OTG IRQ

PM2250 does not have a USB_ID detection logic. Add support
for handling the ID detection over a dedicated GPIO. This
is enabled only for uUSB interface.

Change-Id: I938b135443d66b9451cead35d508bad9a4f685f4
Signed-off-by: Anirudh Ghayal <aghayal@codeaurora.org>