ARM: dts: omap3-igep0020-rev-f: Support IGEPv2 Rev. F

Add support for the new hardware revision of the IGEPv2. Basically, the new
revision F replaces the old Wifi module for a Wilink8 based module.

Signed-off-by: Enric Balletbo i Serra <eballetbo@iseebcn.com>
Acked-by: Javier Martinez Canillas <javier@dowhile0.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>