Switch pkparse to use new mbedtls_pkcs5_pbes2_ext function

Switch pkparse to use new mbedtls_pkcs5_pbes2_ext function
and deprecate mbedtls_pkcs5_pbes2 function.

Signed-off-by: Waleed Elmelegy <waleed.elmelegy@arm.com>
diff --git a/tests/suites/test_suite_pkcs5.function b/tests/suites/test_suite_pkcs5.function
index fd4fde1..2b0b0c1 100644
--- a/tests/suites/test_suite_pkcs5.function
+++ b/tests/suites/test_suite_pkcs5.function
@@ -46,6 +46,7 @@
 
     ASSERT_ALLOC(my_out, outsize);
 
+#if defined(MBEDTLS_TEST_DEPRECATED)
     if (ref_ret != MBEDTLS_ERR_ASN1_BUF_TOO_SMALL) {
         my_ret = mbedtls_pkcs5_pbes2(&params, MBEDTLS_PKCS5_ENCRYPT,
                                      pw->x, pw->len, data->x, data->len, my_out);
@@ -55,6 +56,7 @@
         ASSERT_COMPARE(my_out, ref_out->len,
                        ref_out->x, ref_out->len);
     }
+#endif
 
 #if defined(MBEDTLS_CIPHER_PADDING_PKCS7)
     my_ret = mbedtls_pkcs5_pbes2_ext(&params, MBEDTLS_PKCS5_ENCRYPT,
@@ -93,6 +95,7 @@
 
     ASSERT_ALLOC(my_out, outsize);
 
+#if defined(MBEDTLS_TEST_DEPRECATED)
     if (ref_ret != MBEDTLS_ERR_ASN1_BUF_TOO_SMALL) {
         my_ret = mbedtls_pkcs5_pbes2(&params, MBEDTLS_PKCS5_DECRYPT,
                                      pw->x, pw->len, data->x, data->len, my_out);
@@ -102,6 +105,8 @@
         ASSERT_COMPARE(my_out, ref_out->len,
                        ref_out->x, ref_out->len);
     }
+#endif
+
 #if defined(MBEDTLS_CIPHER_PADDING_PKCS7)
     my_ret = mbedtls_pkcs5_pbes2_ext(&params, MBEDTLS_PKCS5_DECRYPT,
                                      pw->x, pw->len, data->x, data->len, my_out,