USB: dwc3-msm: Disable Update xfer for DBM on ep disable or dequeue

Enable update xfer for DBM while configuring dbm endpoint
and also clear update xfer before queueing end xfer command as
part of endpoint disable as hardware programming guide.

CRs-Fixed: 965207
Change-Id: Ib5ec650884ad06394280416ccf877c1ccce1eaaf
Signed-off-by: Vijayavardhan Vennapusa <vvreddy@codeaurora.org>