ctp_config: enable USB charging when bus is in suspend state.

ctp_config: enable USB charging when bus is in suspend state.

BZ: 27047

Same as mfld behavior, enable USB charging when bus is in suspend
state for better user experience.

Change-Id: I6e388834bc592bab81ea1d630f2530b720c583f7
Signed-off-by: Wu, Hao <hao.wu@intel.com>
Reviewed-on: http://android.intel.com:8080/38338
Reviewed-by: Li, Wenji <wenji.li@intel.com>
Reviewed-by: Tang, Richard <richard.tang@intel.com>
Reviewed-by: Zhuang, Jin Can <jin.can.zhuang@intel.com>
Reviewed-by: Meng, Zhe <zhe.meng@intel.com>
Tested-by: Meng, Zhe <zhe.meng@intel.com>
Tested-by: Kallappa Manjanna, MadhukumarX <madhukumarx.kallappa.manjanna@intel.com>
Reviewed-by: Gross, Mark <mark.gross@intel.com>
Reviewed-by: buildbot <buildbot@intel.com>
Tested-by: buildbot <buildbot@intel.com>