usb: gadget: f_qdss: Fix compilation errors

This change fixes compilation errors as below:
  a. start using dwc3-msm.h which is having required data structure
  and function declaration to communicate with USB controller driver
  APIs (i.e. start using GKI related changes)
  b. remove usage of endless flag as it is not available
  c. pass BAM peripheral related configuration parameters using
  msm_ep_config() API instead of passing through udc_priv variable

Change-Id: I542c86570749eb2b3113d88ec6bea3a9e342f176
Signed-off-by: Mayank Rana <mrana@codeaurora.org>