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_tls13_generic.c b/library/ssl_tls13_generic.c
index a00785b..de2ce32 100644
--- a/library/ssl_tls13_generic.c
+++ b/library/ssl_tls13_generic.c
@@ -274,7 +274,7 @@
         goto error;
     }
 
-    hash_alg = mbedtls_hash_info_psa_from_md(md_alg);
+    hash_alg = mbedtls_md_psa_alg_from_type(md_alg);
     if (hash_alg == 0) {
         goto error;
     }
@@ -1076,7 +1076,7 @@
         }
 
         /* Hash verify buffer with indicated hash function */
-        psa_algorithm = mbedtls_hash_info_psa_from_md(md_alg);
+        psa_algorithm = mbedtls_md_psa_alg_from_type(md_alg);
         status = psa_hash_compute(psa_algorithm,
                                   verify_buffer,
                                   verify_buffer_len,