test_suite_pk.function: add correct dependency

In valid_parameters_pkwrite, we first parse a public key then test
with mbedtls_pk_write_xxx functions. So valid_parameters_pkwrite
should depend on both MBEDTLS_PK_WRITE_C and MBEDTLS_PK_PARSE_C.

Signed-off-by: Yanray Wang <yanray.wang@arm.com>

tests/suites/test_suite_pk.function

@@ -681,7 +681,7 @@ void valid_parameters()
 }
 /* END_CASE */
 
-/* BEGIN_CASE depends_on:MBEDTLS_PK_WRITE_C */
+/* BEGIN_CASE depends_on:MBEDTLS_PK_WRITE_C:MBEDTLS_PK_PARSE_C */
 void valid_parameters_pkwrite(data_t *key_data)
 {
     mbedtls_pk_context pk;