isp1704_charger: Fix driver to work with changes introduced in v3.5
isp1704_charger: Fix driver to work with changes introduced in v3.5

* omap musb driver does not report USB_EVENT_ENUMERATED event anymore
* omap musb driver reporting USB_EVENT_VBUS when charger is connected
* read last event from phy->last_event (instead from ulpi register)
* do not call wall charger detection more times

Signed-off-by: Pali Rohár <271b10744f2b592adf8fde144d536c86b011b93c@gmail.com>
Signed-off-by: Anton Vorontsov <14deb5e5e417133e888bf47bb6a3555c9bb7d81c@enomsg.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs