Move num_ops ECP abstraction fully into internal implementation

Signed-off-by: Paul Elliott <paul.elliott@arm.com>
diff --git a/library/psa_crypto_driver_wrappers.h b/library/psa_crypto_driver_wrappers.h
index 26df088..e3edec7 100644
--- a/library/psa_crypto_driver_wrappers.h
+++ b/library/psa_crypto_driver_wrappers.h
@@ -75,10 +75,10 @@
 uint32_t psa_driver_wrapper_interruptible_get_max_ops(void);
 
 uint32_t psa_driver_wrapper_sign_hash_get_num_ops(
-    const psa_sign_hash_interruptible_operation_t *operation);
+    psa_sign_hash_interruptible_operation_t *operation);
 
 uint32_t psa_driver_wrapper_verify_hash_get_num_ops(
-    const psa_verify_hash_interruptible_operation_t *operation);
+    psa_verify_hash_interruptible_operation_t *operation);
 
 psa_status_t psa_driver_wrapper_sign_hash_start(
     psa_sign_hash_interruptible_operation_t *operation,