KVM: s390: selftests: Add regression tests for PFCR subfunctions

KVM: s390: selftests: Add regression tests for PFCR subfunctions

Check if the PFCR query reported in userspace coincides with the
kernel reported function list. Right now we don't mask the functions
in the kernel so they have to be the same.

Signed-off-by: Hendrik Brueckner <brueckner@linux.ibm.com>
Reviewed-by: Hariharan Mari <hari55@linux.ibm.com>
Link: https://lore.kernel.org/r/20241107152319.77816-5-brueckner@linux.ibm.com
[frankja@linux.ibm.com: Added commit description]
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Message-ID: <20241107152319.77816-5-brueckner@linux.ibm.com>