Use MD<->PSA functions from MD light

As usual, just a search-and-replace plus:

1. Removing things from hash_info.[ch]
2. Adding new auto-enable MD_LIGHT in build-info.h
3. Including md_psa.h where needed

Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
diff --git a/library/ssl_ciphersuites.c b/library/ssl_ciphersuites.c
index 9cef3fe..3d4466a 100644
--- a/library/ssl_ciphersuites.c
+++ b/library/ssl_ciphersuites.c
@@ -1966,10 +1966,10 @@
         case MBEDTLS_KEY_EXCHANGE_DHE_RSA:
         case MBEDTLS_KEY_EXCHANGE_ECDHE_RSA:
             return PSA_ALG_RSA_PKCS1V15_SIGN(
-                mbedtls_hash_info_psa_from_md(info->mac));
+                mbedtls_md_psa_alg_from_type(info->mac));
 
         case MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA:
-            return PSA_ALG_ECDSA(mbedtls_hash_info_psa_from_md(info->mac));
+            return PSA_ALG_ECDSA(mbedtls_md_psa_alg_from_type(info->mac));
 
         case MBEDTLS_KEY_EXCHANGE_ECDH_RSA:
         case MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA: