[PATCH] USB: add omap_udc driver

[PATCH] USB: add omap_udc driver

This patch adds a UDC driver for OMAP, which should work on most
OMAP processors.  It's been tested most on OMAP 1611/5912.  The
driver supports all USB transfer types (including ISO), has limited
DMA support, and seems to work with all gadget drivers, both to
Linux hosts and to MS-Windows ones.

One reason this UDC is particularly interesting is that recent OMAP
processors all support "USB On-The-Go" (OTG) ... and this driver
supports it on at least "H2-like" boards.

Another reason is that the UDC is very flexible and fully featured;
gadget drivers can allocate fifo space to endpoints in the way that's
most convenient for the application.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>