V4L/DVB (9815): omap2: add OMAP2 camera driver.

Add a driver for the OMAP2 camera block. OMAP2 is used in e.g. Nokia
N800/N810 internet tablet.

This driver uses the V4L2 internal ioctl interface.

Signed-off-by: Sakari Ailus <sakari.ailus@nokia.com>
Signed-off-by: Trilok Soni <soni.trilok@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>