TinyCrypt Test: Don't expect ECP error code

We want to be able to remove all legacy ECC entirely when using TinyCrypt.
In particular, we cannot rely on legacy ECC identifiers.
diff --git a/tests/suites/test_suite_pk.data b/tests/suites/test_suite_pk.data
index 64ebbc0..5bdbea0 100644
--- a/tests/suites/test_suite_pk.data
+++ b/tests/suites/test_suite_pk.data
@@ -148,10 +148,14 @@
 depends_on:MBEDTLS_ECP_C:MBEDTLS_ECP_DP_SECP256R1_ENABLED
 mbedtls_pk_check_pair:"data_files/ec_256_pub.pem":"data_files/ec_256_prv.pem":0
 
-Check pair #2 (EC, bad)
-depends_on:MBEDTLS_ECP_C:MBEDTLS_ECP_DP_SECP256R1_ENABLED
+Check pair #2 (EC, bad, legacy ECC)
+depends_on:MBEDTLS_ECP_C:MBEDTLS_ECP_DP_SECP256R1_ENABLED:!MBEDTLS_USE_TINYCRYPT
 mbedtls_pk_check_pair:"data_files/ec_256_pub.pem":"data_files/server5.key":MBEDTLS_ERR_ECP_BAD_INPUT_DATA
 
+Check pair #2 (EC, bad, TinyCrypt)
+depends_on:MBEDTLS_USE_TINYCRYPT
+mbedtls_pk_check_pair:"data_files/ec_256_pub.pem":"data_files/server5.key":MBEDTLS_ERR_PK_BAD_INPUT_DATA
+
 Check pair #3 (RSA, OK)
 depends_on:MBEDTLS_RSA_C:MBEDTLS_PKCS1_V15
 mbedtls_pk_check_pair:"data_files/server1.pubkey":"data_files/server1.key":0