added f2fs filesystem support
Revert "GPU Default speed at 564MHz"

This reverts commit f4f26bb14c59a4b92979de65c5fa015bb9d7b600.
Revert "added f2fs filesystem support"

This reverts commit 1bc735c7e609768154ad11b083d41da41dd451a9.
F2FS: Add missing ref to set_inode