arm: sunxi: Set the default DRAM ZQ value to 3881979 on H3/H5

arm: sunxi: Set the default DRAM ZQ value to 3881979 on H3/H5

Most H3/H5 boards we support have the DRAM ZQ value set to 3881979,
which is also consistent with the default set for the R40.

Make this value the default on H3/H5 instead of 123.

Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>