lib/test: use new internal helpers in library's code and tests

Signed-off-by: Valerio Setti <valerio.setti@nordicsemi.no>
diff --git a/tests/suites/test_suite_x509write.data b/tests/suites/test_suite_x509write.data
index 37679c1..bd4ab1d 100644
--- a/tests/suites/test_suite_x509write.data
+++ b/tests/suites/test_suite_x509write.data
@@ -47,7 +47,7 @@
 x509_csr_check:"data_files/server1.key":"data_files/server1.req.ku-ct":MBEDTLS_MD_SHA1:MBEDTLS_X509_KU_DIGITAL_SIGNATURE | MBEDTLS_X509_KU_NON_REPUDIATION | MBEDTLS_X509_KU_KEY_ENCIPHERMENT:1:MBEDTLS_X509_NS_CERT_TYPE_SSL_SERVER:1:0
 
 Certificate Request check Server5 ECDSA, key_usage
-depends_on:MBEDTLS_MD_CAN_SHA1:MBEDTLS_PK_CAN_ECDSA_SIGN:MBEDTLS_ECDSA_DETERMINISTIC:MBEDTLS_ECP_DP_SECP256R1_ENABLED
+depends_on:MBEDTLS_MD_CAN_SHA1:MBEDTLS_PK_CAN_ECDSA_SIGN:MBEDTLS_ECDSA_DETERMINISTIC:MBEDTLS_HAVE_SECP256R1
 x509_csr_check:"data_files/server5.key":"data_files/server5.req.ku.sha1":MBEDTLS_MD_SHA1:MBEDTLS_X509_KU_DIGITAL_SIGNATURE | MBEDTLS_X509_KU_NON_REPUDIATION:1:0:0:0
 
 Certificate Request check Server1, set_extension
@@ -55,7 +55,7 @@
 x509_csr_check:"data_files/server1.key":"data_files/server1.req.sha256.ext":MBEDTLS_MD_SHA256:0:0:0:0:1
 
 Certificate Request check opaque Server5 ECDSA, key_usage
-depends_on:MBEDTLS_MD_CAN_SHA256:MBEDTLS_PK_CAN_ECDSA_SIGN:MBEDTLS_ECP_DP_SECP256R1_ENABLED
+depends_on:MBEDTLS_MD_CAN_SHA256:MBEDTLS_PK_CAN_ECDSA_SIGN:MBEDTLS_HAVE_SECP256R1
 x509_csr_check_opaque:"data_files/server5.key":MBEDTLS_MD_SHA256:MBEDTLS_X509_KU_DIGITAL_SIGNATURE | MBEDTLS_X509_KU_NON_REPUDIATION:0
 
 Certificate write check Server1 SHA1
@@ -155,11 +155,11 @@
 x509_crt_check:"data_files/server1.key":"":"C=NL,O=PolarSSL,CN=PolarSSL Server 1":"data_files/test-ca.key":"PolarSSLTest":"C=NL,O=PolarSSL,CN=PolarSSL Test CA":"ffffffffffffffffffffffffffffffff":"20190210144406":"20290210144406":MBEDTLS_MD_SHA1:0:0:"NULL":0:0:1:-1:"data_files/server1.long_serial_FF.crt":0:0:"data_files/test-ca.crt":0
 
 Certificate write check Server5 ECDSA
-depends_on:MBEDTLS_MD_CAN_SHA256:MBEDTLS_PK_CAN_ECDSA_SIGN:MBEDTLS_ECDSA_DETERMINISTIC:MBEDTLS_ECP_DP_SECP384R1_ENABLED:MBEDTLS_ECP_DP_SECP256R1_ENABLED
+depends_on:MBEDTLS_MD_CAN_SHA256:MBEDTLS_PK_CAN_ECDSA_SIGN:MBEDTLS_ECDSA_DETERMINISTIC:MBEDTLS_HAVE_SECP384R1:MBEDTLS_HAVE_SECP256R1
 x509_crt_check:"data_files/server5.key":"":"C=NL,O=PolarSSL,CN=PolarSSL Server 1":"data_files/test-ca2.key":"PolarSSLTest":"C=NL,O=PolarSSL,CN=Polarssl Test EC CA":"01":"20190210144406":"20290210144406":MBEDTLS_MD_SHA256:0:0:"NULL":0:0:1:-1:"data_files/server5.crt":0:0:"data_files/test-ca2.crt":0
 
 Certificate write check Server5 ECDSA, Opaque
-depends_on:MBEDTLS_MD_CAN_SHA256:MBEDTLS_PK_CAN_ECDSA_SIGN:MBEDTLS_ECDSA_DETERMINISTIC:MBEDTLS_ECP_DP_SECP384R1_ENABLED:MBEDTLS_ECP_DP_SECP256R1_ENABLED:MBEDTLS_USE_PSA_CRYPTO
+depends_on:MBEDTLS_MD_CAN_SHA256:MBEDTLS_PK_CAN_ECDSA_SIGN:MBEDTLS_ECDSA_DETERMINISTIC:MBEDTLS_HAVE_SECP384R1:MBEDTLS_HAVE_SECP256R1:MBEDTLS_USE_PSA_CRYPTO
 x509_crt_check:"data_files/server5.key":"":"C=NL,O=PolarSSL,CN=PolarSSL Server 1":"data_files/test-ca2.key":"PolarSSLTest":"C=NL,O=PolarSSL,CN=Polarssl Test EC CA":"01":"20190210144406":"20290210144406":MBEDTLS_MD_SHA256:0:0:"NULL":0:0:1:-1:"":2:0:"data_files/test-ca2.crt":0
 
 Certificate write check Server1 SHA1, SubjectAltNames