power: qpnp-charger: enable arb workaround for DC_IN

Accidental reverse boost (ARB) can also cause charger
removal detection issues on DC_IN.

Fix this by also executing the ARB workaround if a
dc charger is connected.

CRs-Fixed: 589210
Change-Id: I4e6d370c31e6184597b609830ad58826b0326bd7
Signed-off-by: David Keitel <dkeitel@codeaurora.org>