hack_dependencies_not_implemented: more verbose indication

Indicate which dependencies are not implemented. This makes it feasible to
audit the not-implemented detection.

The generated test cases that are detected as never-executed now have one or
more `DEPENDENCY_NOT_IMPLEMENTED_YET_PSA_WANT_xxx` instead of a single
`DEPENDENCY_NOT_IMPLEMENTED`. This does not affect when the test cases run.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
diff --git a/scripts/mbedtls_dev/psa_information.py b/scripts/mbedtls_dev/psa_information.py
index a3a84f6..d8bb137 100644
--- a/scripts/mbedtls_dev/psa_information.py
+++ b/scripts/mbedtls_dev/psa_information.py
@@ -69,10 +69,10 @@
     if _implemented_dependencies is None:
         _implemented_dependencies = \
             read_implemented_dependencies('include/psa/crypto_config.h')
-    if not all((dep.lstrip('!') in _implemented_dependencies or
-                not dep.lstrip('!').startswith('PSA_WANT'))
-               for dep in dependencies):
-        dependencies.append('DEPENDENCY_NOT_IMPLEMENTED_YET')
+    for dep in dependencies:
+        dep = dep.lstrip('!')
+        if dep.startswith('PSA_WANT') and dep not in _implemented_dependencies:
+            dependencies.append('DEPENDENCY_NOT_IMPLEMENTED_YET_' + dep)
 
 class Information:
     """Gather information about PSA constructors."""