power: Add pm8058_usb_fix driver

Implement workaround for stuck VCHG.

Some boards do not use the charging feature of the pmic8058 chip. They
however need the software workaround for an issue where the VCHG remains
high even when the USB cable it removed.

Change-Id: Ic92ac0cd913ce88b86706ea013d17789f1acf791
Signed-off-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>