ARM: dts: meson: enabling the USB Host controller on Odroid-C1/C1+ board

This patch enables the USB Host controller (USB1) and the relative USB2 PHY
on Odroid-C1/C1+ board.

Signed-off-by: Emiliano Ingrassia <ingrassia@epigenesys.com>
Acked-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Tested-by: Linus Lüssing <linus.luessing@c0d3.blue>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>