pinctrl: exynos: add exynos5410 SoC specific data

Add Samsung EXYNOS5410 SoC specific data to enable pinctrl
support for all platforms based on EXYNOS5410.
ARM: dts: add pinctrl support to Exynos5410

Add the required pin configuration support to Exynos5410 using pinctrl
interface.
ARM: dts: Add initial device tree support for ODROID-XU

Add initial device tree nodes for ODROID-XU board.
ARM: odroidxu_defconfig: Hardkernel Odroid-xu board based on exynos5410
clk: exynos5410: Add support for SoC-specific register save list

This patch extends suspend/resume support for SoC-specific registers to
handle differences in register sets on particular SoCs.
ARM: dts: odroid-xu: Add heartbead and mmc LEDs support

Add the support for LED1 on ODROID-XU2 board.
-Blue LED will be used for heartbeat
-Green LED will be used for eMMC
-Red LED will be used for microSD
ARM: odroidxu_defconfig: Enable LEDs

To provide access to LEDs enable

CONFIG_LEDS_CLASS=y
CONFIG_LEDS_GPIO=y

(LED's are available from user side under under
/sys/class/leds)

To use the motherboard LEDs to show CPU
activity...

CONFIG_LEDS_TRIGGERS=y
CONFIG_LEDS_TRIGGER_HEARTBEAT=y
CONFIG_LEDS_TRIGGER_CPU=y