s390/diag: fix diagnose 8c description

The comment above diag8c() describes diagnose 210, not diagnose 8c.
Add a proper short description.

Reviewed-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
This commit is contained in:
Heiko Carstens 2023-07-24 18:24:27 +02:00
commit e810487385