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: https://source.codeaurora.org/quic/la/kernel/msm-3.10


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