ARM: OMAP: Sync headers with linux-omap

This patch syncs omap specific headers with linux-omap.
Most of the changes needed because of bitrot caused by
driver changes in linux-omap tree. Integrating this
is needed for adding support for various omap drivers.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>