usb: dwc2: gadget: add vbus_session support
usb: dwc2: gadget: add vbus_session support

Enable phy driver to report vbus session. This allows us to remove
D+ pullup when vbus is not present.

Tested-by: Robert Baldyga <72b1db3d98bf139199de36aba5da00140727c571@samsung.com>
Acked-by: Paul Zimmerman <e1f0d1b12051c0d55589ba9a6d7c10e383763d34@synopsys.com>
Signed-off-by: Gregory Herrero <869cc571e08bd1797a017f1a62bfeeab83fe5bd7@intel.com>
Signed-off-by: Mian Yousaf Kaukab <6d039e1e5c9c8db5c8b5fcee2b837cd67fbfc930@intel.com>
Signed-off-by: Felipe Balbi <94dddeeef08b001e003cce128ddc162a4e2c6cd2@ti.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs