usb: f_gsi: Add EP_LOOKUP for USB_PROT_GPS_CTRL

Add EP_LOOKUP for gps control channel and update the ep_type
as USB and interface id used for GPS function so that user space
Qmuxbridge daemon will use this info and update the response in
DPM_OPEN_QMI Request for QMI communication.

Change-Id: I45f640d952bdb513eb45c69711e61b2c2708f541
Signed-off-by: Chandana Kishori Chiluveru <cchiluve@codeaurora.org>
Signed-off-by: Elson Roy Serrao <eserrao@codeaurora.org>