storage/reflink: is_reflink_supported() -> is_supported()
storage/reflink: is_reflink_supported() -> is_supported()

QubesOS/qubes-core-admin,marmarek/qubes-core-admin,QubesOS/qubes-core-admin,marmarek/qubes-core-admin,marmarek/qubes-core-admin,QubesOS/qubes-core-admin