s390/sclp: detect the zPCI load/store interpretation facility

Detect the zPCI Load/Store Interpretation facility.

Reviewed-by: Eric Farman <farman@linux.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
Link: https://lore.kernel.org/r/20220606203325.110625-2-mjrosato@linux.ibm.com
Signed-off-by: Christian Borntraeger <borntraeger@linux.ibm.com>

arch/s390/include/asm/sclp.h

@@ -88,6 +88,7 @@ struct sclp_info {
 	unsigned char has_sipl : 1;
 	unsigned char has_dirq : 1;
 	unsigned char has_iplcc : 1;
+	unsigned char has_zpci_lsi : 1;
 	unsigned int ibc;
 	unsigned int mtid;
 	unsigned int mtid_cp;

drivers/s390/char/sclp_early.c

@@ -45,6 +45,7 @@ static void __init sclp_early_facilities_detect(void)
 	sclp.has_gisaf = !!(sccb->fac118 & 0x08);
 	sclp.has_hvs = !!(sccb->fac119 & 0x80);
 	sclp.has_kss = !!(sccb->fac98 & 0x01);
+	sclp.has_zpci_lsi = !!(sccb->fac118 & 0x01);
 	if (sccb->fac85 & 0x02)
 		S390_lowcore.machine_flags |= MACHINE_FLAG_ESOP;
 	if (sccb->fac91 & 0x40)