ARM: dts: at91: sama5d2_icp: update device tree to match upstream

Update board device tree to match the version sent upstream.

Link: https://lore.kernel.org/linux-arm-kernel/20200410164320.7658-3-cristian.birsan@microchip.com
Signed-off-by: Cristian Birsan <cristian.birsan@microchip.com>

Author: cristibirsan