usb: gadget: u_bam: Enable zero length packet for tx transfers
usb: gadget: u_bam: Enable zero length packet for tx transfers

Avoid packet re-transmission/drop by sending zero length packet
when usb transfer is multiple of usb endpoint max packet size.

CRs-Fixed: 494184
Change-Id: I01c9f9be41d3b64760e9bc08ec82ef8b6cc1a80f
Signed-off-by: Rajkumar Raghupathy <e911c5add17e30125c635af691759ccca0d6087e@codeaurora.org>

TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas