s390/ap: use static qci information

s390/ap: use static qci information

Since qci is available on most of the current machines, move away from
the dynamic buffers for qci information and store it instead in a
statically defined buffer.

The new flags member in struct ap_config_info is now used as an
indicator, if qci is available in the system (at least one of these
bits is set).

Suggested-by: Harald Freudenberger <freude@linux.ibm.com>
Signed-off-by: Holger Dengler <dengler@linux.ibm.com>
Reviewed-by: Harald Freudenberger <freude@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>