Add missing dependencies for ECDH_xxx key exchanges

ECDH_ECDSA requires ECDSA and ECDH_RSA requires RSA.

Signed-off-by: Gilles Peskine <gilles.peskine@arm.com>
diff --git a/tests/scripts/depends-pkalgs.pl b/tests/scripts/depends-pkalgs.pl
index 1577fee..0d5d297 100755
--- a/tests/scripts/depends-pkalgs.pl
+++ b/tests/scripts/depends-pkalgs.pl
@@ -50,7 +50,8 @@
 # Some algorithms can't be disabled on their own as others depend on them, so
 # we list those reverse-dependencies here to keep check_config.h happy.
 my %algs = (
-    'MBEDTLS_ECDSA_C'   => ['MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA_ENABLED'],
+    'MBEDTLS_ECDSA_C'   => ['MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA_ENABLED',
+                            'MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA_ENABLED'],
     'MBEDTLS_ECP_C'     => ['MBEDTLS_ECDSA_C',
                             'MBEDTLS_ECDH_C',
                             'MBEDTLS_ECJPAKE_C',
@@ -68,6 +69,7 @@
     'MBEDTLS_RSA_C'     => ['MBEDTLS_X509_RSASSA_PSS_SUPPORT',
                             'MBEDTLS_KEY_EXCHANGE_DHE_RSA_ENABLED',
                             'MBEDTLS_KEY_EXCHANGE_ECDHE_RSA_ENABLED',
+                            'MBEDTLS_KEY_EXCHANGE_ECDH_RSA_ENABLED',
                             'MBEDTLS_KEY_EXCHANGE_RSA_PSK_ENABLED',
                             'MBEDTLS_KEY_EXCHANGE_RSA_ENABLED'],
 );