s390/sysinfo: add and display licensed internal code identifier
With z14, the store system information instruction provides an licensed internal code identifier. Display it in /proc/sysinfo. For more information, see the z/Architecture Principles of Operation. (SA22-7832-11). Signed-off-by: NHendrik Brueckner <brueckner@linux.vnet.ibm.com> Reviewed-by: NChristian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: NHeiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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