Add dependency for P192K1 tests

Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
diff --git a/scripts/mbedtls_dev/ecp.py b/scripts/mbedtls_dev/ecp.py
index b211c98..636ff20 100644
--- a/scripts/mbedtls_dev/ecp.py
+++ b/scripts/mbedtls_dev/ecp.py
@@ -498,6 +498,7 @@
     test_name = "ecp_mod_p192k1"
     input_style = "fixed"
     arity = 1
+    dependencies = ["MBEDTLS_ECP_DP_SECP119K1_ENABLED"]
 
     moduli = ["fffffffffffffffffffffffffffffffffffffffeffffee37"] # type: List[str]