ANDROID-COS: Change in charger detection for OSIP

ANDROID-COS: Change in charger detection for OSIP

BZ: 32617

Tablet platform supports AC-charger and currently doesn't support USB-charging.
This patch changes OSIP driver to detect for charger connection status using
power_supply_is_system_supplied() instead of penwell_otg_query_charging_cap().

Change-Id: I0da542988dd9575a6fcdee6c1e54edb4ab16ec65
Signed-off-by: Pavan Kumar S <pavan.kumar.s@intel.com>
Reviewed-on: http://android.intel.com:8080/44361
Reviewed-by: Mukherjee, DevapriyaX <devapriyax.mukherjee@intel.com>
Reviewed-by: Pallala, Ramakrishna <ramakrishna.pallala@intel.com>
Reviewed-by: Tc, Jenny <jenny.tc@intel.com>
Reviewed-by: Jena, TapanX <tapanx.jena@intel.com>
Reviewed-by: Chotard, Celine <celine.chotard@intel.com>
Tested-by: Chotard, Celine <celine.chotard@intel.com>
Reviewed-by: buildbot <buildbot@intel.com>
Tested-by: buildbot <buildbot@intel.com>