without this patch a3700-utils/tim/ddr/ddr_tool.verstr contains the OpenWrt commit ID.
this patch fix the mv_ddr version commit ID by using the global variable MV_DDR_COMMIT_ID.
Upon boot it now prints "mv_ddr-devel-g02e23dbc-d DDR4 16b 1GB 1CS".
Cc: Andre Heider <a.heider@gmail.com>
Signed-off-by: Kerma Gérald <gandalf@gk2.net>
