ARM: dts: Add dts files for exynos4415 SoC

ARM: dts: Add dts files for exynos4415 SoC

This patch adds new exynos4415.dtsi to support Exynos4415 SoC
based on Cortex-A9 quad cores and includes following dt nodes:

- GIC interrupt controller (GIC-400)
- Pinctrl to control three GPIO parts
- CMU (Clock Management Unit) for CMU/CMU_DMC/AUDSS
- CPU information (Cortex-A9 quad cores)
- UART to support serial port
- MCT (Multi Core Timer)
- ADC (Analog Digital Converter)
- RTC (Real Time Clock)
- I2C/SPI busses
- Power domains (CAM, TV, MFC, G3D, LCD0, ISP0/1)
- PMU (Performance Monitoring Unit)
- MSHC (Mobile Storage Host Controller)
- EHCI (Enhanced Host Controller Interface)
- OHIC (Open Host Controller Interface)
- USB 2.0 device with hsotg
- PWM (Pluse Width Modulation) Timer
- AMBA bus for PDMA0/1
- SYSRAM node for memory mapping
- SYSREG node for memory mapping
- PMU (Power Management Unit) node for memory mapping

Cc: Ben Dooks <[email protected]>
Cc: Russell King <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Olof Johansson <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Signed-off-by: Chanwoo Choi <[email protected]>
Signed-off-by: Seung-Woo Kim <[email protected]>
[m.szyprowski: Add OHCI node and correct EHCI node]
Signed-off-by: Marek Szyprowski <[email protected]>
[yj44.cho: Add mipi-phy node]
Signed-off-by: YoungJun Cho <[email protected]>
[jaewon02: Add EHCI and SPI_2 node]
Signed-off-by: Jaewon Kim <[email protected]>
[ideal.song: Add I2S0 node for audio interface]
Signed-off-by: Inha Song <[email protected]>
[tomasz.figa: Add L2 cache node]
Signed-off-by: Tomasz Figa <[email protected]>
Acked-by: Kyungmin Park <[email protected]>
Signed-off-by: Kukjin Kim <[email protected]>