From: Milan Svoboda <msvoboda@ra.rockwell.com>

This patch adds platform device ixp4xx_gadget that uses pxa2xx-udc device
driver. Also pxa2xx_udc.c is updated so it can be compiled without errors
on IXP4XX architecture.
The patch is against 2.6.16.13.

Signed-off-by: Milan Svoboda <msvoboda@ra.rockwell.com>
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