usb: gadget: qti: Update EP_LOOKUP ioctl info for BAM-DMUX transport

The RMNET function uses QTI as control transport and BAM-DMUX as
data transport on some targets where IPA hardware is not available.
A new endpoint type is introduced for BAM-MUX transport. Return this
endpoint type and channel number information in EP_LOOKUP ioctl.

The IPA producer and consumer pipe numbers are set to 0 and user space
should ignore them for BAM-DMUX endpoint type.

Change-Id: Ic41b764b214e9a3172d88d460ecadaf17054f1f2
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>