s390/sclp: detect interlock-and-broadcast-suppression facility

Let's detect that facility.
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>

arch/s390/include/asm/sclp.h

@@ -72,6 +72,7 @@ struct sclp_info {
 	unsigned char has_ib : 1;
 	unsigned char has_cei : 1;
 	unsigned char has_pfmfi : 1;
+	unsigned char has_ibs : 1;
 	unsigned int ibc;
 	unsigned int mtid;
 	unsigned int mtid_cp;

drivers/s390/char/sclp_early.c

@@ -120,6 +120,7 @@ static void __init sclp_facilities_detect(struct read_info_sccb *sccb)
 	sclp.has_cmma = !!(sccb->fac116 & 0x40);
 	sclp.has_esca = !!(sccb->fac116 & 0x08);
 	sclp.has_pfmfi = !!(sccb->fac117 & 0x40);
+	sclp.has_ibs = !!(sccb->fac117 & 0x20);
 	sclp.has_hvs = !!(sccb->fac119 & 0x80);
 	if (sccb->fac85 & 0x02)
 		S390_lowcore.machine_flags |= MACHINE_FLAG_ESOP;