configure tps25740 for only 5v in and out
I believe the datasheet is pretty clear on this, yes, en9/12 should not be grounded to prevent advertising of higher voltages, which will be "false advertising" in your case. 

However, you seem to plan to charge your laptop (to be a "consumer"), as well as provide power to slave devices when the laptop is in USB host mode (be a "provider"). This is called as "Dual-role-power" (DRP) and "Dual-role-Device" (DRD). The TPS25740 does not "request" anything, this IC is only for a "provider", it "advertises" the source capabilities. For DRP and DRD functionality you would need a different chip, which will use alternating roles, as explained here.

For details on now DRD and DRP operate, you need to examine "USB Power Delivery" specifications in addition to "USB Type-C Cable and Connector" specifications.