Reverted requires_cipher_enabled AES

Signed-off-by: Sam Berry <sam.berry@arm.com>
diff --git a/tests/ssl-opt.sh b/tests/ssl-opt.sh
index e4ae30d..78f6a95 100755
--- a/tests/ssl-opt.sh
+++ b/tests/ssl-opt.sh
@@ -2115,7 +2115,7 @@
 # server5.key.enc is in PEM format and AES-256-CBC crypted. Unfortunately PEM
 # module does not support PSA dispatching so we need builtin support.
 requires_config_enabled MBEDTLS_CIPHER_MODE_CBC
-requires_cipher_enabled AES
+requires_config_enabled MBEDTLS_AES_C
 requires_hash_alg MD5
 requires_hash_alg SHA_256
 run_test    "TLS: password protected client key" \
@@ -2127,7 +2127,7 @@
 # server5.key.enc is in PEM format and AES-256-CBC crypted. Unfortunately PEM
 # module does not support PSA dispatching so we need builtin support.
 requires_config_enabled MBEDTLS_CIPHER_MODE_CBC
-requires_cipher_enabled AES
+requires_config_enabled MBEDTLS_AES_C
 requires_hash_alg MD5
 requires_hash_alg SHA_256
 run_test    "TLS: password protected server key" \
@@ -2140,7 +2140,7 @@
 # server5.key.enc is in PEM format and AES-256-CBC crypted. Unfortunately PEM
 # module does not support PSA dispatching so we need builtin support.
 requires_config_enabled MBEDTLS_CIPHER_MODE_CBC
-requires_cipher_enabled AES
+requires_config_enabled MBEDTLS_AES_C
 requires_hash_alg MD5
 requires_hash_alg SHA_256
 run_test    "TLS: password protected server key, two certificates" \