Revert "usb: dwc3: bulk out endpoint optimization"

This reverts commit 3585243d
as it creates deadlock situation in few cases which causes
watchdog timeout.

Change-Id: Icd3a51c1940ce16634aacb7e3620c479f3b37f04
Signed-off-by: Mayank Rana <mrana@codeaurora.org>