As a followup to commit 5f04c14a
(s390-sclp: Define New SCLP Codes) we should mask the sclp command
not only in base sclp, but also in the event facility.

Based on an initial patch from Ralf Hoppe.
Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com>