s390: Correct prno instruction name

IBM z13 (arch11) introduced ppno (Perform Pseudorandom Number Operation).
IBM z14 (arch12) introduced prno (Perform Random Number Operation) and
deprecated ppno.

opcodes/
	* s390-opc.txt: Correct prno instruction name.

Signed-off-by: Jens Remus <jremus@linux.ibm.com>
Reviewed-by: Andreas Krebbel <krebbel@linux.ibm.com>
1 file changed