Replace hash_info macro with MD macro

Now the MD macro also accounts for PSA-only hashes.

Just a search-and-replace, plus manually removing the definition in
hash_info.h.

Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
diff --git a/library/x509_crt.c b/library/x509_crt.c
index 9c44ba6..9b49a1b 100644
--- a/library/x509_crt.c
+++ b/library/x509_crt.c
@@ -2024,7 +2024,7 @@
                               const mbedtls_x509_crt_profile *profile)
 {
     int flags = 0;
-    unsigned char hash[MBEDTLS_HASH_MAX_SIZE];
+    unsigned char hash[MBEDTLS_MD_MAX_SIZE];
 #if defined(MBEDTLS_USE_PSA_CRYPTO)
     psa_algorithm_t psa_algorithm;
 #else
@@ -2133,7 +2133,7 @@
                                     mbedtls_x509_crt_restart_ctx *rs_ctx)
 {
     size_t hash_len;
-    unsigned char hash[MBEDTLS_HASH_MAX_SIZE];
+    unsigned char hash[MBEDTLS_MD_MAX_SIZE];
 #if !defined(MBEDTLS_USE_PSA_CRYPTO)
     const mbedtls_md_info_t *md_info;
     md_info = mbedtls_md_info_from_type(child->sig_md);