[PATCH v2 0/4] usb: chipidea: fix error handling and add dr_role property

[Marc Kleine-Budde]

while hacking on the chipidea driver, I fixed the error path in
the udc part of the chipidea driver. Further I added the possibility
to limit the driver to host or device only mode. It's possible via
platformdata and device tree. For dt I selected the dr_role property
which is already used for other dual role usb drivers.

Changes since v1:
- rebase to Richard's Tree
  https://github.com/riczhao/kernel-imx/commits/topics/usb-driver
- remove redundant wording from devicetree binding documentation
- move dtsi changes into seperate patch
- also change imx23.dtsi
- tested on compile time non OF tree platforms (amd64)
  of.h provides proper stubs.

regards, Marc