TTB_RGN_NC         25 arch/arm/mm/proc-v6.S #define TTB_RGN_NC	(0 << 3)
TTB_RGN_NC          9 arch/arm/mm/proc-v7-2level.S #define TTB_RGN_NC	(0 << 3)
TTB_RGN_NC         16 arch/arm/mm/proc-v7-3level.S #define TTB_RGN_NC	(0 << 10)