OXNAS: remove duplicated & unused lines
OXNAS: do not check sata host version when clk not enabled
OXNAS: add fiq broadcast cache operations
OXNAS: add alias to make fdt awared u-boot pass MAC address to kernel
OXNAS: add a better sched_clock
OXNAS: turn off preempt in default config to avoid pte related cache issue

See http://www.spinics.net/lists/arm-kernel/msg145025.html for other solutions