s390/zcrypt: fix broken zcrypt_send_cprb in-kernel api function

With the new multi zcrypt device node support there came
in a code rework which broke the in-kernel api function
zcrypt_send_cprb(). This function is used by the pkey kernel
module and as an effect, transforming a secure key into a
protected key did not work any more.
Signed-off-by: NHarald Freudenberger <freude@linux.ibm.com>
Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>

drivers/s390/crypto/zcrypt_api.c

@@ -893,7 +893,7 @@ static long _zcrypt_send_cprb(struct ap_perms *perms,
 
 long zcrypt_send_cprb(struct ica_xcRB *xcRB)
 {
-	return _zcrypt_send_cprb(NULL, xcRB);
+	return _zcrypt_send_cprb(&ap_perms, xcRB);
 }
 EXPORT_SYMBOL(zcrypt_send_cprb);