ARM: EXYNOS: Move the driver to drivers/cpuidle directory

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

diff --cc arch/arm/mach-exynos/Makefile
Simple merge

diff --cc drivers/cpuidle/Kconfig.arm
Simple merge

diff --cc drivers/cpuidle/Makefile
Simple merge

diff --cc drivers/cpuidle/cpuidle-exynos.c
Simple merge