driver/ddr/fsl: Add address parity support for DDR4 UDIMM/discrete
Add support of address parity for DDR4 UDIMM or discrete memory. It requires to configurate corresponding MR5[2:0] and TIMING_CFG_7[PAR_LAT]. Parity can be turned on by hwconfig, e.g. hwconfig=fsl_ddr:parity=on. Signed-off-by: NShengzhou Liu <Shengzhou.Liu@nxp.com> Reviewed-by: NYork Sun <york.sun@nxp.com>
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