EM/Charger: Support for USB CDP type Charger Detection.

EM/Charger: Support for USB CDP type Charger Detection.

BZ: 29469

This patch adds support for USB CDP type detection in
the Charger driver.

Change-Id: Ie16abb4fea4e614ebd24d3066ddd5282561add20
Signed-off-by: Vinay Hegde <vinayx.hegde.kota@intel.com>
Reviewed-on: http://android.intel.com:8080/43069
Reviewed-by: Pandey, Raj <raj.pandey@intel.com>
Reviewed-by: Tc, Jenny <jenny.tc@intel.com>
Reviewed-by: Pallala, Ramakrishna <ramakrishna.pallala@intel.com>
Tested-by: Kallappa Manjanna, MadhukumarX <madhukumarx.kallappa.manjanna@intel.com>
Reviewed-by: buildbot <buildbot@intel.com>
Tested-by: buildbot <buildbot@intel.com>