s390/cpufeature: allow for facility bits

Allow for facility bits to be used in cpu features.
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Reviewed-by: Steffen Eiden <seiden@linux.ibm.com>
Link: https://lore.kernel.org/r/20220713125644.16121-3-seiden@linux.ibm.comSigned-off-by: Alexander Gordeev <agordeev@linux.ibm.com>

arch/s390/kernel/cpufeature.c

@@ -9,6 +9,7 @@
 
 enum {
 	TYPE_HWCAP,
+	TYPE_FACILITY,
 };
 
 struct s390_cpu_feature {
@@ -34,6 +35,8 @@ int cpu_have_feature(unsigned int num)
 	switch (feature->type) {
 	case TYPE_HWCAP:
 		return !!(elf_hwcap & BIT(feature->num));
+	case TYPE_FACILITY:
+		return test_facility(feature->num);
 	default:
 		WARN_ON_ONCE(1);
 		return 0;