Revert "Remove deprecated things from hashing modules"

This reverts commit c75d9f589bf392177dbeba7704693e53fe55cb19.

This was merged by mistake in development instead of development_3.0.

Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
diff --git a/library/md4.c b/library/md4.c
index c366c0d..4fd6bc3 100644
--- a/library/md4.c
+++ b/library/md4.c
@@ -102,6 +102,13 @@
     return( 0 );
 }
 
+#if !defined(MBEDTLS_DEPRECATED_REMOVED)
+void mbedtls_md4_starts( mbedtls_md4_context *ctx )
+{
+    mbedtls_md4_starts_ret( ctx );
+}
+#endif
+
 #if !defined(MBEDTLS_MD4_PROCESS_ALT)
 int mbedtls_internal_md4_process( mbedtls_md4_context *ctx,
                                   const unsigned char data[64] )
@@ -231,6 +238,13 @@
     return( 0 );
 }
 
+#if !defined(MBEDTLS_DEPRECATED_REMOVED)
+void mbedtls_md4_process( mbedtls_md4_context *ctx,
+                          const unsigned char data[64] )
+{
+    mbedtls_internal_md4_process( ctx, data );
+}
+#endif
 #endif /* !MBEDTLS_MD4_PROCESS_ALT */
 
 /*
@@ -287,6 +301,15 @@
     return( 0 );
 }
 
+#if !defined(MBEDTLS_DEPRECATED_REMOVED)
+void mbedtls_md4_update( mbedtls_md4_context *ctx,
+                         const unsigned char *input,
+                         size_t ilen )
+{
+    mbedtls_md4_update_ret( ctx, input, ilen );
+}
+#endif
+
 static const unsigned char md4_padding[64] =
 {
  0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
@@ -332,6 +355,14 @@
     return( 0 );
 }
 
+#if !defined(MBEDTLS_DEPRECATED_REMOVED)
+void mbedtls_md4_finish( mbedtls_md4_context *ctx,
+                         unsigned char output[16] )
+{
+    mbedtls_md4_finish_ret( ctx, output );
+}
+#endif
+
 #endif /* !MBEDTLS_MD4_ALT */
 
 /*
@@ -361,6 +392,15 @@
     return( ret );
 }
 
+#if !defined(MBEDTLS_DEPRECATED_REMOVED)
+void mbedtls_md4( const unsigned char *input,
+                  size_t ilen,
+                  unsigned char output[16] )
+{
+    mbedtls_md4_ret( input, ilen, output );
+}
+#endif
+
 #if defined(MBEDTLS_SELF_TEST)
 
 /*