smdk4412: merge mali r4p0 driver

Change-Id: Ief824b1dce642fd2133900cd2b0f108fbfa89b1c

Conflicts:
	drivers/gpu/mali400/r3p2/mali/common/mali_kernel_mem_os.c
	drivers/gpu/mali400/r3p2/mali/common/mali_mem_validation.c
	drivers/gpu/mali400/r4p0/mali/platform/pegasus-m400/exynos4_pmm.c