S/390: Fix arch level of pckmo instruction.

S/390: Fix arch level of pckmo instruction.

Fix wrong architecture level of PCKMO instruction.

Committed to mainline.

opcodes/ChangeLog:

2017-05-17  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

	* s390-opc.txt: PCKMO change arch level to z196.

gas/ChangeLog:

2017-05-17  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

	* testsuite/gas/s390/zarch-z10.d: Remove pckmo.
	* testsuite/gas/s390/zarch-z10.s: Remove pckmo.
	* testsuite/gas/s390/zarch-z196.d: Add pckmo.
	* testsuite/gas/s390/zarch-z196.s: Add pckmo.