ARM: dts: exynos: Add initial data for coupled regulators for Exynos5422/5800

ARM: dts: exynos: Add initial data for coupled regulators for Exynos5422/5800

Declare Exynos5422/5800 voltage ranges for OPPs for big CPUs
(Cortex-A15) and wcore bus.  Couple their voltage supplies as vdd_arm
and vdd_int should be in 300 mV range.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
[k.konieczny: add missing patch description]
Signed-off-by: Kamil Konieczny <k.konieczny@samsung.com>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>