This is similar to a recent commit for exynos5250 titled:
  ARM: EXYNOS: Add aliases for i2c controller

Adding aliases will be useful to prevent warnings in a future
change. See:
  i2c: s3c2410: Get the i2c bus number from alias id
Signed-off-by: NDoug Anderson <dianders@chromium.org>
Acked-by: NOlof Johansson <olof@lixom.net>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

Signed-off-by: NTomasz Figa <t.figa@samsung.com>
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Acked-by: NThomas Abraham <thomas.abraham@linaro.org>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

Currently all boards must explicitly disable all unused device tree
nodes of unused components (e.g. i2c, sdhci, etc...). This makes it
necessary to all boards to be aware of all components on the SoC, which
in turns makes board dts files longer and more difficult to maintain
(e.g. adding new components to SoC-level tree requires adding nodes with
status="disabled" to every board).

This patch changes "status" of all optional components in SoC-level dts
file to "disabled", adds status="okay" to respective nodes of used
components in dts of all boards and removes all nodes with only
status="disabled" from boards dts.
Signed-off-by: NTomasz Figa <t.figa@samsung.com>
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Acked-by: NThomas Abraham <thomas.abraham@linaro.org>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

Most definitions from exynos4210.dtsi can be applied for other SoCs from
EXYNOS4 line as well, so move the common part into separate file that
can be included by dtsi files of other EXYNOS4 SoCs (as well as current
exynos4210.dtsi).
Signed-off-by: NTomasz Figa <t.figa@samsung.com>
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Acked-by: NThomas Abraham <thomas.abraham@linaro.org>
[kgene.kim@samsung.com: Dongjin Kim <dongjin.kim@agreeyamobility.net>
submitted a similar patch 'Add DTS files derived from common EXYNOS4'
before this but I picked this up because of included exynos4x12 stuff]
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>