TTB_RGN_OC_WBWA    10 arch/arm/mm/proc-v7-2level.S #define TTB_RGN_OC_WBWA	(1 << 3)
TTB_RGN_OC_WBWA    17 arch/arm/mm/proc-v7-3level.S #define TTB_RGN_OC_WBWA	(1 << 10)