power: qpnp-charger: configure battery presence irq as shared

Configure the battery presence interrupt to be IRQF_SHARED
and IRQ_ONESHOT to allow the BIF driver to detect battery
presence as well without having to build a dependency
on the qpnp-charger driver.

Change-Id: Id8ecfa39745a05936302b3462bc4ded2e1002929
Signed-off-by: David Keitel <dkeitel@codeaurora.org>