ARM: 8688/1: pm: add missing types include

Add missing types.h include to make the suspend header self-contained
and avoid compilation breakage due to include-directive ordering.

Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>