added md5sum for psl233_viv17.4_vsec400h_Feb23
added md5sum for psl233_viv17.4_vsec400h_Feb23

Signed-off-by: Thomas Fuchs <15897a30a83827a951186749e444341d3eb9178d@de.ibm.com>

open-power/snap,open-power/snap,open-power/snap,open-power/snap,open-power/snap