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_cookie.c b/library/ssl_cookie.c
index 6d54300..b51e91a 100644
--- a/library/ssl_cookie.c
+++ b/library/ssl_cookie.c
@@ -114,7 +114,7 @@
     (void) f_rng;
     (void) p_rng;
 
-    alg = mbedtls_hash_info_psa_from_md(COOKIE_MD);
+    alg = mbedtls_md_psa_alg_from_type(COOKIE_MD);
     if (alg == 0) {
         return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
     }