ANDROID: GKI: power_supply: Add properties to support PPS constant current(CC) mode

Add power supply properties to support PPS CC mode charging for dual
charge pumps with MID-VBAT configuration, these properties are set from
user space.

Signed-off-by: Sahil Chandna <chandna@codeaurora.org>
(cherry picked from commit 04e367f45dbd8ecd4a67ce1cc7d5cd11bb8a49e9)
Signed-off-by: Mark Salyzyn <salyzyn@google.com>
Bug: 150789066
Change-Id: Ia2d467255818dbaaf2d87f56aae39584368772ce