ARM: dts: exynos: Fix DTC unit name warnings in Peach Pit

ARM: dts: exynos: Fix DTC unit name warnings in Peach Pit

Fix following DTC warnings in Exynos5420 Peach Pit:

Warning (unit_address_vs_reg): Node /dp-controller@145B0000/ports/port@0 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /i2c@12CD0000/lvds-bridge@48/ports/port@0 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /i2c@12CD0000/lvds-bridge@48/ports/port@1 has a unit name, but no reg property

Signed-off-by: Krzysztof Kozlowski <[email protected]>
Reviewed-by: Javier Martinez Canillas <[email protected]>