Switch library and tests to the x509_oid module

```
git grep -l -P 'mbedtls_oid_get_(?!numeric_string\b)' | xargs perl -i -pe 's/\bmbedtls_oid_get_(?!numeric_string\b)/mbedtls_x509_oid_get_/'
./framework/scripts/code_style.py --since HEAD~1 --fix
```

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
diff --git a/tests/suites/test_suite_x509parse.function b/tests/suites/test_suite_x509parse.function
index b6fb202..19b37b3 100644
--- a/tests/suites/test_suite_x509parse.function
+++ b/tests/suites/test_suite_x509parse.function
@@ -1010,8 +1010,8 @@
     parsed_cur = &parsed;
     len = 0;
     for (i = 0; parsed_cur != NULL; i++) {
-        TEST_EQUAL(mbedtls_oid_get_attr_short_name(&parsed_cur->oid,
-                                                   &short_name), 0);
+        TEST_EQUAL(mbedtls_x509_oid_get_attr_short_name(&parsed_cur->oid,
+                                                        &short_name), 0);
         len += mbedtls_snprintf((char *) out + len, out_size - len, "%s ", short_name);
         parsed_cur = mbedtls_x509_dn_get_next(parsed_cur);
     }
@@ -1516,7 +1516,7 @@
     oid.p   = buf->x;
     oid.len   = buf->len;
 
-    ret = mbedtls_oid_get_extended_key_usage(&oid, &desc);
+    ret = mbedtls_x509_oid_get_extended_key_usage(&oid, &desc);
 
     if (strcmp(ref_desc, "notfound") == 0) {
         TEST_ASSERT(ret != 0);