Yes, the schematic has the isp170x, see ref D4380. The pinouts match for that part and the schematic's USB diagram matches my understanding where the ID pin goes to the twl4030 but not the isp170x.

The schematic answers one of my questions - how is CHGR_DET_EN_N wired? The schematic shows it as being permanently grounded. "If CHGR_DET_EN_N is LOW, and when the ISP1704A is in power down-mode, on detecting VBUS > Vth(r)(VBUS), the ISP1704A will perform automatic USB battery charger detection." The datasheet also says "When used as a host or an OTG A-device transceiver, it is recommended that the CHGR_DET_EN_N pin is deasserted." So I don't know if USB host will work as long as the PHY doesn't get powered down, or if that signal being permanently enabled means it's pretty much impossible to negotiate a connection as host.