ARM/dts: omap3: move smsc911x regulators to IGEPv2 DT

Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
ARM/dts: omap3: add support for SMSC911x LAN chip

Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>