[PORT FROM R2]Battery: improve fault handling for weak chargers

[PORT FROM R2]Battery: improve fault handling for weak chargers

BZ: 17841

This patch lowers the VBUSDET threshold and improves the fault handling
by checking the USBDET bit and the charging mode parameters.

R2-Change-Id: Iabd0b004fc7d85d56c60337b1896e09035c6f044
Signed-off-by: Ramakrishna Pallala <ramakrishna.pallala@intel.com>
Conflicts:

	drivers/power/intel_mdf_battery.c

Change-Id: I63ed7a73df212e4ed6b6fa13d49a2fa6d0552a2b
Signed-off-by: Eduardo Mendi <eduardox.mendi@intel.com>
Reviewed-on: http://android.intel.com:8080/32756
Reviewed-by: buildbot <buildbot@intel.com>
Tested-by: buildbot <buildbot@intel.com>