s390/zcrypt: Introduce pre-allocated device status array for cca misc

s390/zcrypt: Introduce pre-allocated device status array for cca misc

Introduce a pre-allocated device status array memory together with
a mutex controlling the occupation to be used by the findcard2()
function. Limit the device status array to max 128 cards and max
128 domains to reduce the size of this pre-allocated memory to 64 KB.

Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Reviewed-by: Holger Dengler <dengler@linux.ibm.com>
Link: https://lore.kernel.org/r/20250424133619.16495-10-freude@linux.ibm.com
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>