power: qpnp-charger: add support for external Type-C module

Add support for communication between smbcharger and external Type-C
module.
The smbcharger will query current capability and mode information
from Type-C module for configuring it's input current limit and
updating USB OTG status.

Change-Id: I034a7e6e901b2e730f79432b7a2989c45ccb641f
Signed-off-by: Ashay Jaiswal <ashayj@codeaurora.org>