ARM: exynos: Temporarily empty mach-exynos dir

The board files will be added back in once mach-exynos starts to look more generic. This is simpler than trying to hack the current code due to its lack of documentation and commit history.
ARM: EXYNOS: Add ARCH_EXYNOS and reorganize arch/arm/mach-exynos

The arch/arm/mach-exynos4 directory (CONFIG_ARCH_EXYNOS4) has
made for plaforms based on EXYNOS4 SoCs. But since upcoming
Samsung's SoCs such as EXYNOS5 (ARM Cortex A15) can reuse most
codes in current mach-exynos4, one mach-exynos directory will
be used for them.

This patch changes to CONFIG_ARCH_EXYNOS (arch/arm/mach-exynos)
but keeps original CONFIG_ARCH_EXYNOS4 in mach-exynos/Kconfig to
avoid changing in driver side.

Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

Conflicts:
	arch/arm/Makefile
	arch/arm/mach-exynos/Kconfig
	arch/arm/mach-exynos/Makefile
	arch/arm/mach-exynos/Makefile.boot
	arch/arm/mach-exynos/clock-exynos4210.c
	arch/arm/mach-exynos/clock-exynos4212.c
	arch/arm/mach-exynos/clock.c
	arch/arm/mach-exynos/cpu.c
	arch/arm/mach-exynos/cpuidle.c
	arch/arm/mach-exynos/dev-ahci.c
	arch/arm/mach-exynos/dev-audio.c
	arch/arm/mach-exynos/dev-dwmci.c
	arch/arm/mach-exynos/dev-pd.c
	arch/arm/mach-exynos/dev-sysmmu.c
	arch/arm/mach-exynos/dma.c
	arch/arm/mach-exynos/headsmp.S
	arch/arm/mach-exynos/hotplug.c
	arch/arm/mach-exynos/include/mach/debug-macro.S
	arch/arm/mach-exynos/include/mach/dma.h
	arch/arm/mach-exynos/include/mach/dwmci.h
	arch/arm/mach-exynos/include/mach/entry-macro.S
	arch/arm/mach-exynos/include/mach/exynos4-clock.h
	arch/arm/mach-exynos/include/mach/gpio.h
	arch/arm/mach-exynos/include/mach/hardware.h
	arch/arm/mach-exynos/include/mach/io.h
	arch/arm/mach-exynos/include/mach/irqs.h
	arch/arm/mach-exynos/include/mach/map.h
	arch/arm/mach-exynos/include/mach/memory.h
	arch/arm/mach-exynos/include/mach/pm-core.h
	arch/arm/mach-exynos/include/mach/pmu.h
	arch/arm/mach-exynos/include/mach/regs-audss.h
	arch/arm/mach-exynos/include/mach/regs-clock.h
	arch/arm/mach-exynos/include/mach/regs-gpio.h
	arch/arm/mach-exynos/include/mach/regs-irq.h
	arch/arm/mach-exynos/include/mach/regs-mct.h
	arch/arm/mach-exynos/include/mach/regs-mem.h
	arch/arm/mach-exynos/include/mach/regs-pmu.h
	arch/arm/mach-exynos/include/mach/regs-sysmmu.h
	arch/arm/mach-exynos/include/mach/regs-usb-phy.h
	arch/arm/mach-exynos/include/mach/sysmmu.h
	arch/arm/mach-exynos/include/mach/system.h
	arch/arm/mach-exynos/include/mach/timex.h
	arch/arm/mach-exynos/include/mach/uncompress.h
	arch/arm/mach-exynos/include/mach/vmalloc.h
	arch/arm/mach-exynos/init.c
	arch/arm/mach-exynos/irq-combiner.c
	arch/arm/mach-exynos/irq-eint.c
	arch/arm/mach-exynos/mach-armlex4210.c
	arch/arm/mach-exynos/mach-nuri.c
	arch/arm/mach-exynos/mach-origen.c
	arch/arm/mach-exynos/mach-smdk4x12.c
	arch/arm/mach-exynos/mach-smdkv310.c
	arch/arm/mach-exynos/mach-universal_c210.c
	arch/arm/mach-exynos/mct.c
	arch/arm/mach-exynos/platsmp.c
	arch/arm/mach-exynos/pm.c
	arch/arm/mach-exynos/pmu.c
	arch/arm/mach-exynos/setup-fimc.c
	arch/arm/mach-exynos/setup-fimd0.c
	arch/arm/mach-exynos/setup-i2c0.c
	arch/arm/mach-exynos/setup-i2c1.c
	arch/arm/mach-exynos/setup-i2c2.c
	arch/arm/mach-exynos/setup-i2c3.c
	arch/arm/mach-exynos/setup-i2c4.c
	arch/arm/mach-exynos/setup-i2c5.c
	arch/arm/mach-exynos/setup-i2c6.c
	arch/arm/mach-exynos/setup-i2c7.c
	arch/arm/mach-exynos/setup-keypad.c
	arch/arm/mach-exynos/setup-sdhci-gpio.c
	arch/arm/mach-exynos/setup-sdhci.c
	arch/arm/mach-exynos/setup-usb-phy.c
	arch/arm/plat-s5p/cpu.c
	arch/arm/plat-samsung/include/plat/exynos4.h