USB: gadget: Bring-in QCOM ci13xxx UDC drivers

Use these drivers until chipidea udc drivers are supported
for MSM OTG.

Signed-off-by: Manu Gautam <mgautam@codeaurora.org>
Git-commit: fc5d37c510630a3912e8cf66f284f13f7b48358a
Git-repo: git://git.quicinc.com/platform/manifest.git


Change-Id: I3ab8263405b1570506ae14b11cae0624aa85e05a
[tarung@codeaurora.org: resolved trivial merge conflicts]
Signed-off-by: Tarun Gupta <tarung@codeaurora.org>