ARM: dts: meson: add node for SPIFC

This adds a node for the SPI Flash Controller to the Amlogic Meson
DTS.

Signed-off-by: Beniamino Galvani <b.galvani@gmail.com>
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Carlo Caione <carlo@caione.org>
ARM: dts: meson: enable Ethernet controller

Add a node for the Ethernet controller to Meson DTS file and
enable it on the Geniatech ATV1200 board.

Signed-off-by: Beniamino Galvani <b.galvani@gmail.com>
Signed-off-by: Carlo Caione <carlo@caione.org>