Add the tR_max, tBERS_max, tPROG_max and tCCS_min timings to the
nand_sdr_timings struct.
Assign default/safe values for the statically defined timings, and
extract them from the ONFI parameter table if the NAND is ONFI
compliant.
Signed-off-by: NBoris Brezillon <boris.brezillon@free-electrons.com>
Tested-by: NMarc Gonzalez <marc_gonzalez@sigmadesigns.com>