usb: dwc3-msm: add POWER_SUPPLY_PROP_HEALTH property to USB power supply

There is a requirement to notify the over voltage condition
detected by charger. To achieve that, add POWER_SUPPLY_PROP_HEALTH
property to the USB power supply through which the status
can be updated.

CRs-Fixed: 789279
Change-Id: I5325d6b808922b74e1c40435b2d67b4684ec7363
Signed-off-by: Subbaraman Narayanamurthy <subbaram@codeaurora.org>