ARM: dts: exynos: use spaces instead of tabs around '='

Use spaces in Origen boards instead of tabs around '=' for simple
property assignments, to match coding style.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20210928084949.27939-13-krzysztof.kozlowski@canonical.com