s390/cpumf: Update CPU Measurement facility extended counter set support

Update CPU Measurement counter facility support for the
extended counter set for machine types 9175 and 9176.

Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Acked-by: Sumanth Korikkar <sumanthk@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>