ARM: s5pv210: Add support for s5p6442 SoC

This patch adds DeviceTree-only support for Samsung S5P6442 SoC, which
is an S5PV210-like ARM1176JZF-s-based SoC.

Signed-off-by: Tomasz Figa <tomasz.figa@gmail.com>
pinctrl: samsung: Add driver data for S5P6442 SoC

This patch adds SoC-specific driver data describing pin controller of
S5P6442 SoC.

Signed-off-by: Tomasz Figa <tomasz.figa@gmail.com>
include/dt-bindings: Add s5p6442-clock DT bindings header

This is temporary, until this patch gets merged with another patch
adding proper clock driver for this SoC.

Signed-off-by: Tomasz Figa <tomasz.figa@gmail.com>
ARM: dts: Add initial device tree sources for Samsung S5P6442 SoC

This patch adds basic device tree sources for S5P6442 SoC and Apollo
board.

Signed-off-by: Tomasz Figa <tomasz.figa@gmail.com>
arm: configs: Add s5p6442_defconfig

This patch adds defconfig that can be used to build kernels supporting
S5P6442 SoC using Device Tree.

Signed-off-by: Tomasz Figa <tomasz.figa@gmail.com>