power: smb138x: Add REAL_TYPE psy property for usb power_supply

Add POWER_SUPPLY_PROP_REAL_TYPE property for usb_psy to present its real
charger type.

Change-Id: Ic440441c554971e976b1af0decee8228f9b43cb6
Signed-off-by: Harry Yang <harryy@codeaurora.org>
1 file changed