The BitField of non privilege register address is only from bit 2 to 25.

v2: use REG_GENMASK instead. (Zhenyu)
Signed-off-by: NGao, Fred <fred.gao@intel.com>
Reviewed-by: NZhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: NZhenyu Wang <zhenyuw@linux.intel.com>