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: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

arch/s390/include/asm/sysinfo.h

@@ -21,7 +21,8 @@ struct sysinfo_1_1_1 {
 	unsigned char :8;
 	unsigned char ccr;
 	unsigned char cai;
-	char reserved_0[28];
+	char reserved_0[20];
+	unsigned long lic;
 	char manufacturer[16];
 	char type[4];
 	char reserved_1[12];

arch/s390/kernel/sysinfo.c

@@ -89,6 +89,8 @@ static void stsi_1_1_1(struct seq_file *m, struct sysinfo_1_1_1 *info)
 	EBCASC(info->model_temp_cap, sizeof(info->model_temp_cap));
 	seq_printf(m, "Manufacturer:         %-16.16s\n", info->manufacturer);
 	seq_printf(m, "Type:                 %-4.4s\n", info->type);
+	if (info->lic)
+		seq_printf(m, "LIC Identifier:       %016lx\n", info->lic);
 	/*
 	 * Sigh: the model field has been renamed with System z9
 	 * to model_capacity and a new model field has been added