gpu: ion: Sync with CM Samsung MSM8660 kernel (next branch)

Signed-off-by: Sultanxda <sultanxda@gmail.com>

Conflicts:
	drivers/gpu/ion/ion_carveout_heap.c
	drivers/gpu/ion/ion_cp_heap.c
	drivers/gpu/ion/ion_iommu_heap.c
	drivers/gpu/ion/ion_system_heap.c
	drivers/gpu/ion/msm/msm_ion.c
	drivers/video/msm/vidc/1080p/ddl/vcd_ddl.c