s390x: Fix sclp facility bit numbers

sclp_feat_check takes care of adjusting the bit numbering such that they
can be defined as they are in the documentation.

Fixes: 4dd649c8 ("lib: s390x: sclp: Extend feature probing")
Signed-off-by: Janis Schoetterl-Glausch <scgl@linux.ibm.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Reviewed-by: Janosch Frank <frankja@linux.ibm.com>
Message-Id: <20220621143015.748290-2-scgl@linux.ibm.com>
Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>