test_suite_psa_crypto_driver_wrappers: improving driver access counters

When AES_C is not defined CTR_DRBG relies on PSA to get AES-ECB. This
means that, when AES-ECB is accelerated, each random operation goes through
driver access as well. This might result in unexpectedly increased
counters for driver's access.
We add extra counters in test_driver_[cipher/key_management].c to be
more specific on which driver functions are accessed and ignore
extra accesses due to CTR_DRBG.

Signed-off-by: Valerio Setti <valerio.setti@nordicsemi.no>
diff --git a/tests/include/test/drivers/cipher.h b/tests/include/test/drivers/cipher.h
index 950a174..2e299da 100644
--- a/tests/include/test/drivers/cipher.h
+++ b/tests/include/test/drivers/cipher.h
@@ -25,9 +25,10 @@
     psa_status_t forced_status;
     /* Count the amount of times one of the cipher driver functions is called. */
     unsigned long hits;
+    unsigned long cipher_encrypt_hits;
 } mbedtls_test_driver_cipher_hooks_t;
 
-#define MBEDTLS_TEST_DRIVER_CIPHER_INIT { NULL, 0, PSA_SUCCESS, 0 }
+#define MBEDTLS_TEST_DRIVER_CIPHER_INIT { NULL, 0, PSA_SUCCESS, 0, 0 }
 static inline mbedtls_test_driver_cipher_hooks_t
 mbedtls_test_driver_cipher_hooks_init(void)
 {