GPU:ion Improvments
gpu: ion: remove stale variable
gpu: ion: Remove get_flags ioctl
gpu: ion: Minimize allocation fallback delay
gpu: ion: Remove code for reusable heap
gpu: ion: Add null-pointer check after allocation
gpu: ion: Align va address to biggest buffer size
gpu: ion: enable the kmalloc heap
msm: Add support for ION Flushing without virtual address
gpu: ion: Use correct type for variables
gpu: ion: Do fallback when allocating large sizes
gpu: ion: Free the sgtable for CMA based heaps
gpu: ion: minor refactor in ion_mmap